284 NATURAL HISTORY OF PLANTS. 
tube furnished outside with elliptical rather prominent coloured glands 
(usually o); lobes nearly equal, obtuse imbricated. Corolla perigy- 
nously inserted at top of receptacle; standard broadly cordate, 
shorter than keel, emarginate or cut at apex, callous within at base 
above short claw; wings with longer claws; limb unevenly ovate ; 
keel-petals resembling and longer than wings. Stamens 10, in- 
serted with corolla, l-adelphous; filaments connate into a sheath 
cleft above; anthers ovate-elliptical, furnished with an oblong gland 
at back below apex. Germen shortly stipitate ; stalk slender excen- 
tric; unevenly ovate, compressed, sparingly glandular at base; 
ovules 6, 2-seriate, obliquely descending; style slender, curved at 
apex, tubular; summit truncate stigmatiferous. Legume exserted, 
unevenly ovate, apiculate turgid 1-seeded (?).—A rigid branched 
hoary shrub; twigs ending in sharp spines; leaves simple scattered 
sessile, rather thick; stipules minute narrow ; flowers’ subspicate 
along ends of spinescent twigs ; pedicels very short ; bracts flowered 
caducous ; bractlets 2, inserted at middle of pedicel (California’). 
IV. LOTEA. 
106. Lotus L.—Flowers irregular resupinate ; receptacle scarcely 
concave. Calyx gamosepalous; teeth or lobes 5, nearly equal 
(Krokeria, Microlotus), or dissimilar and connate into two lips ; lowest 
tooth or lobe sometimes longer than others. Corolla papilionaceous ; 
standard: suborbicular, obovate or ovate-acuminate, contracted at 
base into an often short claw; wings unevenly obovate ; keel curved 
or inflexed, often 2-gibbous, beaked. Stamens 10, 2-adelphous (9-1) ; 
alternate filaments dilated at apex; anthers uniform. Germen sub- 
sessile ; ovules «; style soon inflexed, glabrous, either continuous 
or furnished on inner side with a tooth or twig (Hulotus) or a mem- 
brane (Zetragonolobus) ; stigma terminal or lateral. Legume oblong 
or linear, subterete, straight curved or arched (Krokeria, Microlotus), 
rarely turgid (Arokeria), bare or longitudinally 4-winged (Zetragono- 
lobus) outside, bare or slightly stuffed or more rarely septate within 
between seeds. Seeds globose, suborbicular, or lenticular, exarillate. 
—Herbs or undershrubs, glabrous silky or hirsute; leaves 3-5- 
foliolate ; 8 leaflets close together at apex of petiole; 1, 2 near base 
a Indigo. Dalea spinosa A. GRAY, Plant. Thurber., 315.— 
2 Species 1. A. spinosa H. By., loc. cit.—  Torr., in Parke’s Rep., Bot., t. 3. 
