Pseudoxandra leiophylla

Pseudoxandra leiophylla is a species of plant in the family Annonaceae. It is native to Brazil, Colombia, and Venezuela.[2] Ludwig Diels, the German botanist who first formally described the species using the basionym Unonopsis leiophylla, named it after its smooth (Latinized form of Greek λεῖος, leîos)[3] leaves.[4]

Pseudoxandra leiophylla
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Pseudoxandra
Species:
P. leiophylla
Binomial name
Pseudoxandra leiophylla
Synonyms

Pseudoxandra coriacea R.E.Fr. Unonopsis leiophylla Diels

Description

It is a tree reaching 4 to 25 meters in height. Its shiny leathery leaves are 10-20 by 4-7 centimeters and come to a point at their tips. The leaves are hairless on their upper and lower surfaces, but can have warty bumps. The leaves are dark brown, greenish brown or black-brown above and brown or dark brown on their underside. Its petioles are 2-8 millimeters long. Its flowers are solitary or in pairs and axillary. Each flower is on a pedicel 1-5 millimeters long. Its flowers have 3 oval-shaped sepals that are 2-5 by 4-7 millimeters. The sepals are hairy when young, but smooth when mature. Its 6 petals are arranged in two rows of 3. The outer petals are white, 7-12 by 7-8 millimeters, and concave. The outer petals are densely hairy on their outer surface. The inner petals are white, 5-9 by 4-5 millimeters, and concave. The inner petals are smooth on their outer surface except for a densely hairy patch running from the tip to the base. It has numerous stamens that are 1.5-3 millimeters long. Each flower has 2-15 monocarps that are yellow, brown, red or black at maturity and 9-14 millimeters wide. Its shiny brown seeds are 4-9 by 7-9 millimeters.[5]

Reproductive biology

The pollen of P. leiophylla is shed as permanent tetrads.[6]

References
  1. Botanic Gardens Conservation International (BGCI) & IUCN SSC Global Tree Specialist Group (2019). "Pseudoxandra leiophylla". IUCN Red List of Threatened Species. 2099: e.T143325615A143325617. doi:10.2305/IUCN.UK.2019-1.RLTS.T143325615A143325617.en.
  2. "Pseudoxandra leiophylla (Diels) R.E.Fr". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved May 22, 2019.
  3. Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.
  4. Diels, L. (1931). "Anonaceae novae" [New Anonaceae]. Notizblatt des Königl. Botanischen Gartens und Museums zu Berlin (in Latin and German). 11 (102): 73–86. doi:10.2307/3994585. JSTOR 3994585.
  5. Maas, Paul J.M.; Westra, Lubbert Y.Th. (2003). "Revision of the Neotropical genus Pseudoxandra (Annonaceae)". Blumea - Biodiversity, Evolution and Biogeography of Plants. 48 (2): 201–259. doi:10.3767/000651903X674955. ISSN 0006-5196.
  6. Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University. 202 (202): 1–130. JSTOR 41764703.
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