Alysicarpus schomburgkii

Alysicarpus schomburgkii is a species of pea (family Fabaceae) found in Australia, in the Northern Territory, Queensland, and Western Australia.[2] It was first described in 1926 by Anton Schindler from four specimens: two collected at Port Darwin (one by Schomburgk, one by Foelsche) and the others from north Queensland .[3][4]

Alysicarpus schomburgkii
MEL 07155369A

Least Concern (TPWCA)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Genus: Alysicarpus
Species:
A. schomburgkii
Binomial name
Alysicarpus schomburgkii
Occurrence data from GBIF

Description

Alysicarpus schomburgkii is an annual herb tgrowing to a height of 1 m. The leaves have minute hooked and long simple hairs on their undersides but are without a covering on the upper surface. The leaf rachis is 2–4 mm long and the leaflets are elliptic at the base of the plant, changing to linear-and spearshaped at the apex. They are about 32–150 mm long by 2–7 mm wide. The inflorescence can be up to 370 mm long and has a covering of various kinds of hairs including yellowish resinous simple hairs, septate glandular hairs, hooked hairs and colleters. The flower bracts are 4–6 mm long by about. 2.5 mm wide. The flower stalks are 3–8 mm long. The calyx tube is 1–2 mm long and has narrowly elliptic lobes. The corolla is yellow to yellow-orange. Ovules 3–5. The pod becomes dark grey with age, and is constricted between the seeds, and densely covered with colleters and minute hooked hairs. The seeds are yellow-brown, and elliptic to rhomboidal in shape.[1]

Distribution

In Western Australia it is found in the IBRA regions of Central Kimberley, Dampierland, and Northern Kimberley,[5] while in the Northern Territory it is found in the IBRA regiions of Arnhem Coast, Arnhem Plateau, Cape York Peninsula, Central Arnhem, Daly Basin, Darwin Coastal, Gulf Fall and Uplands, Northern Kimberley, Ord Victoria Plain, Pine Creek, Tiwi Cobourg, and Victoria Bonaparte.[1]

Habitat

It is found in well-drained, often skeletal soils.[1]

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References
  1. "NT Flora: Factsheet Alysicarpus schomburgkii". NT Flora. Retrieved 25 July 2020.
  2. "Alysicarpus schomburgkii Schindl". www.gbif.org. Retrieved 25 July 2020.
  3. "Alysicarpus schomburgkii". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  4. Schindler, A. K. (1926). "Desmodii generumque affinium species et combinationes novae. II". Repertorium novarum specierum regni vegetabilis. 22 (13–21): 250–288. doi:10.1002/fedr.19260221306.
  5. Western Australian Herbarium, Biodiversity and Conservation Science. "FloraBase—the Western Australian Flora: Alysicarpus schomburgkii". florabase.dpaw.wa.gov.au. Retrieved 25 July 2020.
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