FABACEAE 593 
times linear, acute: fruit subglobose, 7-8 mm. thick, silvery-canescent, spiny, its spines 
barbed at the apex. 
In dry soil, Texas to California and Mexico. Spring. 
3. Krameria ramosissima (A. Gray) S. Wats. Shrubby, spiny, canescent. Stems 
erect, 2-7 dm. tall, rigidly much branched; branches spreading: leaf-blades linear, or 
linear-lanceolate, 2-5 mm. long, often clustered in the axils, obtuse, sessile : peduncles 3-6 
mm. long: pedicels about as long as the peduncles, subtended by 2 bracts : sepals lanceolate 
or ovate-lanceolate, 6-8 mm. long: le light maroon : fruit ovoid, 6-7 mm. long, silky, 
the slender spines unarmed. 
In dry soil, Texas, New Mexico and adjacent Mexico. Spring. 
4. Krameria parvifolia Benth. Shrubby, silky-pubescent and somewhat glandular. 
Stem erect, 2-7 dm. tall, rigid, diffusely branched ; branches spreading, sometimes spiny : 
leaves linear or nearly so, 0.5-1.5 em. long, the lower ones obtuse, the upper spine-tipped, 
sessile : peduncles 4-8 mm. long: pedicels longer than the peduncles, subtended by 2 
bracts: sepals 7-9 mm. long, strigose and often slightly glandular: fruit subglobose, 
cordate, 7-9 mm. long, the slender spines retrorsely barbed their whole length. 
In dry soil, Texas to California and Mexico. Spring. 
FAMILY 18. FABACEAE Reichenb. Prea FAMILY. 
Herbs, shrubs, vines or trees of vast and varied economic importance, Leaves 
alternate: blades mostly compound, sometimes 1-foliolate, or probably simple, 
occasionally perfoliate. Flowers perfect, or rarely polygamo-dioecious, solitary 
or variously disposed in a simple or co.ipound inflorescence, irregular. Calyx 
of 4 or 5 partially united sepals, sometimes 2-lipped. Corolla papilionaceous, 
hypogynous or perigynous. Petals 5, distinct or somewhat united, usually 
separable into 3 kinds ; a broadened upper one surrounding the rest in the bud 
(standard), 2 lateral ones (wings), and 2 united or cohering ones (keel). Androe- 
cium of 10 or sometimes 9 or rarely 5 stamens. Filaments monadelphous, dia- 
delphous or occasionally distinct. Gynoecium of a single carpel. Ovary 
superior, l-celled or 2-several-celled by cross partitions. Styles entire. Stigma 
terminal, oblique or lateral. Ovules 1 or many, anatropous or amphitropous. 
Fruit capsular, a 2-valved or indehiscent legume, or a loment. Seeds usually 
destitute of endosperm. Embryo with thick cotyledons. [Papilionaceae L.] 
Stamens 10: filaments distinct. 
Leaf-blades pinnate. TRIBE I. SOPHOREAE. 
z Leaf-blades digitately 3-foliolate, 1-foliolate or simple. TRIBE II. PODALYRIEAE. 
Stamens 10 or fewer: filaments monadelphous or diadelphous. 
Leaves destitute of tendrils. 
Herbs, shrubs, trees or woody vines. 
Fruit 2-valved or indehiscent, not a loment. 
Foliage not glandular-dotted (except in Glycyrrhiza). 
Anthers of 2 kinds: filaments monadelphous. TRIBE III. GENISTEAE, 
Anthers all alike: filaments diadelphous at least beyond . 
the middle. 
Leaf-blades 3-foliolate. 
Leaflets toothed. TRIBE IV. TRIFOLIEAE. 
Leaflets entire. TRIBE V. LOTEAE. 
Leaf-blades pinnately several-many-foliolate or 
rarely 1-foliolate. 
Pods dehiscent. TRIBE VI. GALEGEAE. 
: Pods indehiscent. TRIBE VII. DALBERGIEAE. 
ie e LADEN dodge, Tene IX. HEDYSAREAE 
oment. RIBE IX. 4 è 
Le Herbaceous vines or herbs. TRIBE X. PHASEOLEAE. 
aves bearing tendrils, TRIBE XI. VICIEAE. 
TRIBE I. SOPHOREAE. 
Tnflorescenes pas Pods moniliform. 2, CLADRASTIS. 
B ult TRIBE II. PODALYRIEAE. d 
Ovary manifestly stalked : pods inflated or turgid. 4. BAPTISIA. — 
Stipules ee ee E Vu adim un 
Stipules not decurrent. pe d ak Pe ee 8 ion. 
38 
