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Boechera Retrofracta
''Boechera retrofracta'' is a species of flowering plant in family Brassicaceae. The common names include reflexed rockcress. Description ''Boechera retrofracta'' is a biennial or short-lived perennial species. The plants typically have single stems 1.5 to 7 dm (sometimes to 10.5 dm) tall. The basal leaves are densely pubescent, oblanceolate shaped, 2 to 7 mm wide, with entire margins or shallowly dentate. The flowers are arranged into a usually unbranched raceme with 15 to 80 flowers but sometimes having as many as 140. The flowers are pendent and the petals are white to lavender. The fruits ( siliques) are strongly reflexed (pendulous or pendent), usually appressed to rachis at maturity. The seeds have narrowly winged margins. Flowering in April through until August. Chromosomes: 2n=14. Habitat ''Boechera retrofracta'' was listed as a threatened species in Minnesota in 1984 because of its rarity and the small size of its populations. In Minnesota populations are found in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brassicaceae
Brassicaceae () or (the older) Cruciferae () is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple (although are sometimes deeply incised), lack stipules, and appear alternately on stems or in rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall (or septum). The family contains 372 genera and 4,060 accepted species. The largest genera are ''Draba'' (440 species), ''Erysimum'' (261 species), ''Lepidium'' (234 species), ''Cardamine'' (233 species), and ''Alyssum'' (207 species). The family contains the cruciferous vegetables, including species such as ''Brassica oleracea'' (cultivated as cabbage, kale, cauliflower, broccoli and collards), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf
A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, flower, and fruit collectively form the shoot system. In most leaves, the primary photosynthetic tissue is the palisade mesophyll and is located on the upper side of the blade or lamina of the leaf but in some species, including the mature foliage of ''Eucalyptus'', palisade mesophyll is present on both sides and the leaves are said to be isobilateral. Most leaves are flattened and have distinct upper (adaxial) and lower ( abaxial) surfaces that differ in color, hairiness, the number of stomata (pores that intake and output gases), the amount and structure of epicuticular wax and other features. Leaves are mostly green in color due to the presence of a compound called chlorophyll that is essential for photosynthesis as it absorbs light ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dentate Leaf
The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article. The terms listed here all are supported by technical and professional usage, but they cannot be represented as mandatory or undebatable; readers must use their judgement. Authors often use terms arbitrarily, or coin them to taste, possibly in ignorance of established terms, and it is not always clear whether because of ignorance, or personal preference, or because usages change with time or context, or because of variation between specimens, even specimens from the same plant. For example, whether to call leaves on the same tree "acuminate", "lanceolate", or "linear" could ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raceme
A raceme ( or ) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. Examples of racemes occur on mustard (genus ''Brassica'') and radish (genus ''Raphanus'') plants. Definition A ''raceme'' or ''racemoid'' is an unbranched, indeterminate type of inflorescence bearing pedicellate flowers (flowers having short floral stalks called ''pedicels'') along its axis. In botany, an ''axis'' means a shoot, in this case one bearing the flowers. In indeterminate inflorescence-like racemes, the oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. A plant that flowers on a showy raceme may have this reflected in its scientific name, e.g. the species ''Cimicifuga racemosa''. A compou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silique
A silique or siliqua (plural ''siliques'' or ''siliquae'') is a type of fruit (seed capsule) having two fused carpels with the length being more than three times the width. When the length is less than three times the width of the dried fruit it is referred to as a silicle. The outer walls of the ovary (the ''valves'') usually separate when ripe, then being named ''dehiscent'', and leaving a persistent partition (the ''replum''). ''Siliques'' are present in many members of the mustard family, Brassicaceae, but some species have ''silicles'' instead. Some species closely related to plants with true ''siliques'' have fruits with a similar structure that do not open when ripe; these are usually called ''indehiscent siliques'' (compare dehiscence). Lunaria annua MHNT.BOT.2004.0.779.jpg, Silicles of ''Lunaria annua'' – MHNT Capsella bursa-pastoris Sturm23.jpg, ''Capsella bursa-pastoris'' with silicles Raphanus sativus 004.jpg, Indehiscent siliques of radish ''Raphanus sativus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rachis
In biology, a rachis (from the grc, ῥάχις [], "backbone, spine") is a main axis or "shaft". In zoology and microbiology In vertebrates, ''rachis'' can refer to the series of articulated vertebrae, which encase the spinal cord. In this case the ''rachis'' usually forms the supporting axis of the body and is then called the spine or vertebral column. ''Rachis'' can also mean the central shaft of pennaceous feathers. In the gonad of the invertebrate nematode '' Caenorhabditis elegans'', a rachis is the central cell-free core or axis of the gonadal arm of both adult males and hermaphrodites where the germ cells have achieved pachytene and are attached to the walls of the gonadal tube. The rachis is filled with cytoplasm. In botany In plants, a rachis is the main axis of a compound structure. It can be the main stem of a compound leaf, such as in ''Acacia'' or ferns, or the main, flower-bearing portion of an inflorescence above a supporting peduncle. Where it subdivides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boundary Waters Canoe Area Wilderness
The Boundary Waters Canoe Area Wilderness (BWCAW or BWCA) is a wilderness area within the Superior National Forest in the northeastern part of the US state of Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over to ... under the administration of the United States Forest Service, U.S. Forest Service. A mixture of forests, glacial lakes, and streams, the BWCAW's preservation as a primitive wilderness began in the 1900s and culminated in the Boundary Waters Canoe Area Wilderness Act of 1978. It is a popular destination for canoeing, hiking, and fishing, and is one of the most visited wildernesses in the United States. Geography The BWCAW extends along of the U.S.–Canada border in the Arrowhead Region of Minnesota. The combined region of the BWCAW, Superior National Forest, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diabase Hills
The Diabase Hills are a mountain range in Washoe County, Nevada. References Mountain ranges of Nevada Mountain ranges of the Great Basin Mountain ranges of Washoe County, Nevada {{WashoeCountyNV-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physematium Scopulinum
''Physematium scopulinum'', also called ''Woodsia scopulina'', is a deciduous perennial fern in the family Woodsiaceae, with the common name Rocky Mountain Woodsia,. This plant is native to the western and northern United States and Canada. ''W. scopulina'' is a small to medium sized fern, 10-30 centimeters high, which grows in mesic Mesic may refer to: * Mesic, North Carolina, a town in the United States * Mesic habitat, a type of habitat See also *Mesić (other) *Mešić Mešić is a Bosnian surname, a patronymic derived from the masculine given name '' Meša'', it ... to dry rock crevices.Dale H. Witt, Janet E. Marsh, and Robin B. Bovey, ''Mosses Lichens and Ferns of Northwest North America'' (Edmonton: Lone Pine, 1988), p. 273 Description ''Physematium scopulinum'' has twice pinnate fronds arising from a short scaly rhizome. The mostly upright fronds are 10–30 cm in length and up to 8 cm in width and are medium to pale green in color. The pinnae an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asplenium Trichomanes
''Asplenium trichomanes'', the maidenhair spleenwort, is a small fern in the spleenwort genus ''Asplenium''. It is a widespread and common species, occurring almost worldwide in a variety of rocky habitats. It is a variable fern with several subspecies. The binomial nomenclature, specific epithet ''trichomanes'' refers to a Greek word for fern. Description ''Asplenium trichomanes'' grows 10 to 30 cm tall forming tufts arising from a short, scaly rhizome. The scales are dark. The evergreen fronds are long and narrow, gradually tapering towards the tip. They are simply divided into small, yellow-green to dark-green, roundish Frond, pinnae. The stipe (botany), stipe and rachis of the frond are dark all along their length. The fronds can reach 40 cm in length but are more commonly 8–20 cm. The Sorus, indusia are linear to oval, straight, and attached to the upper-side of the fertile vein. There are (2) 4 to 8 sori per pinna and each are 1 to 3.5 mm long. Diplo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juniperus Horizontalis
''Juniperus horizontalis'', the creeping juniper or creeping cedar,Bailey, L.H.; Bailey, E.Z.; the staff of the Liberty Hyde Bailey Hortorium. 1976. ''Hortus third: A concise dictionary of plants cultivated in the United States and Canada''. Macmillan, New York. is a low-growing shrubby juniper native to northern North America, throughout most of Canada from Yukon east to Newfoundland, and in some of the northern United States. Description Living up to both its scientific and common names, the species reaches only tall but often spreading several metres wide. The shoots are slender, diameter. The leaves are arranged in opposite decussate pairs, or occasionally in whorls of three; the adult leaf blades are scale-like, 1–2 mm long (to 8 mm on lead shoots) and broad, and derive from an adnate petiole. The juvenile leaves (on young seedlings only) are needle-like, long. The cones are berry-like, globose to bilobed, in diameter, dark blue with a pale blue-white waxy bloom, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthocarpus Luteus
''Orthocarpus luteus'' is a species of flowering plant in the broomrape family known by the common name yellow owl's-clover. ( Plants Profile) It is native to much of western and central , where it grows in many types of plateau, grassland, and mountain habitat. Description It is an annual herb producing a slender, hairy, glandular, bright yellowish green to deep purple stem up to about 40 centimeters tall. The narrow leaves are up to 5 centimeters long, the upper ones sometimes di ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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