''Cremastosperma'' is a genus of flowering plants in the family Annonaceae, subfamily Malmeoideae, tribe Malmeae. In 2018 there were 34 recognised species distributed in Central and South America. ''Cremastosperma'' was described by

Robert Elias Fries (Klas) Robert Elias Fries (11 July 1876, Uppsala – 29 January 1966, Stockholm), the youngest son of Theodor Magnus Fries (1832–1913) and grandson of Elias Magnus Fries(1794–1878) and an expert on mushrooms. A Swedish botanist who was a mem ...

in 1930, based on ''Aberemoa pedunculata'' Diels, originally described by

Ludwig Diels Dr. Friedrich Ludwig Emil Diels (24 September 1874 – 30 November 1945) was a German botanist. Diels was born in Hamburg, the son of the classical scholar Hermann Alexander Diels. From 1900 to 1902 he traveled together with Ernst Georg Prit ...

(1906), which thus became the type species ''Cremastosperma pedunculatum'' (Diels) R.E.Fr.. Species of ''Cremastosperma'' are found in lowland to pre-montane tropical forest in the Neotropics. The greatest species diversity is distributed in the narrow tropical zone to the west of the Andean mountain chain on the Pacific Ocean side of north-western South America, north into Central America as far as Costa Rica; and on the eastern side of the Andes extending from Colombia through eastern Ecuador and Peru as far south as Bolivia. Two species are found in coastal Venezuela (''Cremastosperma macrocarpum'' Maas and ''Cremastosperma venezuelanum'' Pirie), and one in French Guiana (''Cremastosperma brevipes'' (

DC. Augustin Pyramus (or Pyrame) de Candolle (, , ; 4 February 17789 September 1841) was a Swiss botanist. René Louiche Desfontaines launched de Candolle's botanical career by recommending him at a herbarium. Within a couple of years de Candolle ...

)

R.E.Fr. (Klas) Robert Elias Fries (11 July 1876, Uppsala – 29 January 1966, Stockholm), the youngest son of Theodor Magnus Fries (1832–1913) and grandson of Elias Magnus Fries(1794–1878) and an expert on mushrooms. A Swedish botanist who was a ...

Description

''Cremastosperma'' species are small understory trees with typical Annonaceae floral morphology (sepals and petals in whorls of three; indefinite numbers of spirally arranged stamens and carpels) bearing a resemblance to various other Neotropical genera with apocarpous, single-seeded, stipitate fruits (such as ''

Guatteria ''Guatteria'' is a genus of flowering plants in the family Annonaceae. It is the largest genus in the family in South America, and the dominant genus in mature forest. The fruits are berries, borne in clusters on short stalks. Species include:

''). The most useful character by which they can be distinguished from these and other similar Neotropical Annonaceae is displayed by the midrib of the leaves, which is raised on the upper side with an unusual, mostly conspicuous, longitudinal groove. Recognised species: * ''Cremastosperma alticola'' Pirie & Chatrou * ''Cremastosperma antioquense'' Pirie * ''Cremastosperma awaense'' Pirie * ''Cremastosperma brachypodum'' Pirie & Chatrou * ''Cremastosperma brevipes'' (

)

* ''Cremastosperma bullatum'' Pirie * '' Cremastosperma cauliflorum''

* ''Cremastosperma cenepense'' Pirie & Zapata * ''Cremastosperma chococola'' Pirie * ''Cremastosperma confusum'' Pirie * ''Cremastosperma dolichocarpum'' Pirie * ''Cremastosperma dolichopodum'' Pirie & Maas * ''Cremastosperma gracilipes''

* ''Cremastosperma leiophyllum''

* ''Cremastosperma longicuspe''

* ''Cremastosperma longipes'' Pirie * ''Cremastosperma macrocarpum'' Maas * ''Cremastosperma magdalenae'' Pirie * ''Cremastosperma megalophyllum''

* ''Cremastosperma microcarpum''

* ''Cremastosperma monospermum'' ( Rusby)

* ''Cremastosperma napoense'' Pirie * ''Cremastosperma novogranatense''

* ''Cremastosperma oblongum''

* ''Cremastosperma osicola'' Pirie & Chatrou * ''Cremastosperma pacificum''

* ''Cremastosperma panamense'' Maas * ''Cremastosperma pedunculatum'' (

Diels Diels is the last name of several people: * Rudolf Diels (1900–1957), German politician * Otto Diels (1876–1954), German scientist noted for his work on the Diels–Alder reaction * Ludwig Diels (1874–1945), German botanist * Hermann Diels ...

)

* ''Cremastosperma pendulum'' (

Ruiz The Spanish surname Ruiz originates from the Germanic personal name " Hrodric" which is composed of the elements "Hrōd", meaning "renown", and "rīc", meaning "power(ful)", thus "famous ruler". Ruiz is a patronymic from the personal name Ruy, a sh ...

& Pav.)

* ''Cremastosperma peruvianum''

* ''Cremastosperma stenophyllum'' Pirie * ''Cremastosperma venezuelanum'' Pirie * ''Cremastosperma westrae'' Pirie * ''Cremastosperma yamayakatense'' Pirie

References

{{Taxonbar, from=Q8351571 Annonaceae genera