254 NATURAL HISTORY OF PLANTS. 
Cajanus. Germen subsessile, 1-2-ovulate; ovules descending ; 
micropyle extrorse superior ; raphe somewhat thick; style slender 
or thickened,' curved above; apex minute capitate stigmatiferous. 
Legume compressed oblique suborbicular, oblong or slightly falcate, 
1- or oftener 2-seeded, continuous or more rarely septate within, 2- 
valved. Seeds subglobose or compressed, more rarely subreniform ; 
hilum lateral or subhorizontal and superior, short or oblong, dilated 
into a small or rudimentary aril; funicle subcentral or oblique.— 
Herbs or undershrubs, prostrate, erect, or oftener twining; leaves 
pinnate or more rarely subdigitate, 3-foliolate; leaflets sprinkled 
with resinous dots on under surface ; stipelle minute or 0; stipules 
ovate or lanceolate; flowers’ in axillary racemes, solitary or in 
pairs along rachis; bracts caducous; bractlets 0 (All hotter 
regions’). 
50? Eriosema Desvx.’— Flowers almost those of Rhynchosia, 
calyx-lobes 5, all distinct or 2 superior shortly connate. Keel curved 
at apex, obtuse. Stamens 2-adelphous (of Rhynchosia). Germen 
sessile or subsessile; ovules 2, descending; style filiform or slightly 
thickened at apex; apex often curved, minutely capitate, stig- 
matiferous. Legume of Rhynchosia, continuous or nearly con- 
tinuous within, 1—2-seeded, 2-valved. Seeds oblique or transverse ; 
hilum linear superior, more or less thickened ; funicle subhorizontal, 
attached at internal extremity of hilum.—Herbs or undershrubs, 
prostrate, erect, or rarely twining ; leaves pinnate 3-foliolate, usually 
exstipellate; leaflets usually narrowed, sprinkled with resinous dots’ 
on under surface ; stipules narrow, free or connate into one super- 
posed to leaf; flowers’ in axillary racemes, solitary or in pairs along 
1 More thickened in Sigmodostylis. 
2? Brntuam divides this genus, according to 
the characters of hilum, aril, and funicle, into 11 
sections, as follows :— 
a. Aril thick, fleshy (3 sections: Nomismia, 
Phyllomatia [Wieut. & Ary.], Ptychocentron 
Wieut & ARN.). 
b. Funicle expanded into a membrane covering 
the hilum, but not truly arillate (8 sections: 
Orthodanum, Chrysoscias, Arcyphyllum, Cyano- 
spermum, Pseudocajan (BENTH.), Copisma, Poly- 
‘tropia). 
3 Yellow or purple, often with dark stripes. 
4 Roxs., Pl. Coromand., t. 221.—Jacg,, Ic. 
Rar., t. 146.—JacquEm., Voy. Bot., t. 54.—A. 
Ricg., Fl. Abyss. Tent., t. 43.—Hoox., Icon., 
t.189; Exot. Fl., t. 201.—Bot. Mag., t. 1859, 
2284.—Bot. Reg., t. 275.—BeEnru., in Mart. 
Fl. Bras., Payil., 200, t. 54; Fl. Austral., ii. 
265.—Tuw., Enum. Pl. Zeyl., 412.— Suem., 
Herald, t. 20—Harv. & Sonp., Fl. Cap., ii. 
247.—Baker, in Oliv. Fl. Trop. Afr., ii. 216,— 
Watp., Rep., i. 785; v. 540; Ann.,, i. 252; ii. 
434; iv. 567. 
5 In Ann. Se. Nat., sér. 1, ix. 421 (err. 
Euriosma).—DC., Prodr., ii, 388 (Rhynchosie 
§ 3).—EnvL., Gen., n. 6691.—Pyrrhotrichia 
Wient & Ary,, Prodr., i. 288, not. 
6 Less conspicuous than in Rhynchosia. 
7 Yellow, usually small. 
