Acacia feddeana Harms, Repert. Spec.
Pseudosenegalia feddeana (Harms) Seigler & Ebinger
Parasenegalia and Pseudosenegalia (Fabaceae): New Genera of the Mimosoideae
Seigler, David S.
Ebinger, John E.
Riggins, Chance W.
Terra, Vanessa
Miller, Joseph T.
Novon
2017
2017-04-13
25
180
205
9CSZ7
Seigler & Ebinger
Seigler & Ebinger & Riggins & Terra & Miller
2017
[723,1086,1013,1035]
Magnoliopsida
Fabaceae
Pseudosenegalia
GBIF
Plantae
Fabales
19
199
Tracheophyta
genus
gen. nov.
TYPE: Acacia feddeanaHarms, Repert. Spec.Nov. Regni Veg. 16: 450. 1920 [ ≡ Pseudosenegalia feddeana(Harms) Seigler & Ebinger].
Shrubs or small trees, some to 12 m; twigs terete or nearly so, not flexuous; short shoots present; prickles and stipular spines absent. Leaves alternate or clustered on short shoots, bipinnate; stipules small, linear, symmetrical, herbaceous, tardily deciduous to persistent; petioles adaxially grooved, 0.5–13 mm long; petiolar gland usually present, sessile, solitary; rachis adaxially grooved, usually with glands between some pairs of pinnae; pinnae 1 to 7 pairs/leaf, opposite; paraphyllidia absent; leaflets 11 to 26 pairs/ pinna, linear, 1.2–2.9 X0.4–0.9 mm, 1 vein from the base, glabrous to lightly pubescent, midrib subcentral. Inflorescences a cylindrical spike, 1 to 2 clustered in leaf axils. Flowers bracteate, sessile, actinomorphic, sympetalous, 5-merous, with a basal copular nectiferous disk; stamens 1 0 0 to 1 5 0, distinct, attached along the side of the nectariferous disk, exserted; anthers small, dorsifixed, dehiscing vertically, anther glands absent; ovary with a stipe to 2.1 mm long; style filiform; stigma filiform. Legumes straight to slightly curved, flattened to elliptic in cross section, oblong, eglandular, dehiscing along both sutures; seeds uniseriate, not surrounded by pulp, ovoid to ellipsoid, flattened; pleurogram present or absent.
Habitat and distribution. Pseudosenegaliais known to occur in dry scrub and thorn-scrub vegetation between 1300 and 3300 m in Bolivia.
TAXONOMIC KEY TO SPECIES OF PSEUDOSENEGALIA 1. Leaves with a single pair of pinnae............................. P. feddeana(Harms) Seigler & Ebinger 1 '. Leaves with 3 to 7 pairs of pinnae................. P.riograndensis(Atahuachi & L. Rico) Seigler & Ebinger