288 NATURAL HISTORY OF PLANTS. 
112, Helminthocarpum A. Ricu.'—Flowers very small (of 
Lotus) ; 2 superior teeth of calyx broader. Petals long-unguiculate, 
variably but slightly adherent to staminal tube. Keel rather obtuse. 
Stamens of Lotus ; vexillary stamen free or more or less connate with 
remainder. Germen sessile 2-ovulate; style inflexed; apex mi- 
nutely capitate, stigmatiferous. Legume small linear sub-4-gonous, 
circinately curved, coriaceous, transversely wrinkled by veins, sub- 
septate within between seeds, indehiscent.—A slender prostrate 
herb, with minute silky down; leaves imparipinnate; stipules 
minute ; flowers? subumbellate on peduncles in higher axils; bracts 
very small; bractlets 0 (Abyssinia’). 
' 118. Hymenocarpus Savi.'—Flowers almost those of Zotus ; 
calyx-lobes deep, nearly equal. Standard suborbicular; keel beaked. 
Stamens of Lotus. Germen sessile 2-ovulate ; style abruptly inflexed ; 
stigma terminal. Legume broad compressed circinate; exterior 
margin broad membranous, nearly entire or unequally toothed ; 
indehiscent. Seeds reniform exarillate——An annual prostrate herb ; 
leaves imparipinnate or lowest leaves 2-foliolate ; leaflets entire ; 
stipules of higher leaves 0, of lower adnate to petiole (?); 
flowers 2-4 at extremity of each axillary peduncle; lowest bracts 
foliaceous ; remainder small, setaceous or obtuse ; bractlets 0 (Medi- 
terranean’), 
V. TRIFOLIEA. 
114. Trifolium T.—Receptacle very short, lined by a disk. Calyx 
gamosepalous ; teeth or lobes 5, nearly equal or unequal ; 2 superior 
more or less connate; 1 or 3 inferior longer. Corolla usually mar- 
cescent; petals often connate at base, sometimes into a short tube ; 
standard subobovate or oblong; wings narrow; keel shorter than 
wings, obtuse. Stamens 10, either 2-adelphous (9-1), or more rarely 
1-adelphous at middle; all or 5 filaments often more or less dilated 
at apex; anthers uniform. Germen sessile or stipitate ; ovules few; 
style slender, curved above, hooked-inflexed at apex; stigma, ter- 
1 Fl, Abyss. Tent. i. 200, t. 36.—B. H., 5 Species 1. H. circinata Savi, loc. cit.— 
Gen., 489, n. 76. 2 Yellow. Sretu., Fl. Grec., t. 768.—Monris, Fl. Sard., 
3 Species 1, H. abyssinicwm A. Ricu., loc. +.34.—DuB., Bot. Gail. 123.—Gren. & Gopr., 
cit, —Baxgr, in Oliv. Fl. Trop. Afr., ii. 60.— Fl. de Fr., i. 382.—Medicago circinata L., 
Watp., Ann., ii. 406. Spec., 1096.—Szr., in DC., Prodr., ii. 171.— 
4 Fl. Pis., ii. 205.—B. H., Gen., 489, n. 77. Auricuia muris Camerarii Bavuu., Hist., ii. 387. 
