FABACEAE 725 
7. P. adenanthus G. E F. c Leaflets 2.5-6 em. long; blades ovate to 
elliptic- n mostly acute: panicles slightly elo Mp em 'several-lowered: lobes 
f the low noun iria ngular-lanee eolate: standard yellow, tinged with 
purple; J blade 20-3 0 mm. wide; wings 30-34 mm. long, _purple- pet ba Pis 
inear, curved. — Pinelands, S pen. Fla. Nat. of trop. and e 
fall or all year S. 
58. STROPHOSTYLES Ell. Vines or trailing plants. Leaflets 3. 
Racemes or panicles cluster-like. Calyx similar to that of Phaseolus, but the 
lower lip with a longer middle lobe. Corolla mainly pink-purple or white: 
blades of the keel-petals n dilated at the base. Style spiral. Seed with 
truncate ends. About spe ecies, American.—WILD-BEANS. | SAND-BEANS. 
TRAILING-BEANS. 
Calyx gaping 5 uec glabrous; lateral lobes much smaller than the others: ovary and 
pod g 
Perennial ant blades of the wing-petals cuneate. 1. S. umbellata. 
Annual plants: blades of the wing-petals not cuneate. 2. S. helvola. 
Calyx not gaping; tube “hirsute ; lateral lobes not much smaller 
than the others: ovary and pod densely pubescent. 3. S. pauciflora. 
S. umbellata (Muhl.) Britton. Ns trailing: leaflets 1-4 cm. long; 
blades elliptic-lanceolate, varying ovate or lanceolate: corolla pink or 
pale- E , often fading pun blade 
of the standard reniform, 1-2 cm. broad: 
2.5- -5 em. long. [Phaseolus helvolus 
(Chapm. F1.)]—Dry sandy fields and woods, 
ae: s and Tu Pc Fla 
, Mo. and N fall. 
LES iab id Ell. Stem trailing: leaf- 
lets 2-4 g; blades rhombic-oval, 
often 3-lobe Sd: REA purple or purplish, 
fading greenish; “blade of the standard sub- 
ry gin 
orbicula marginate: pod 6-10 em. long 
[Phaseolus diversifolius (Chapm. Fl.)]— 
River shores and damp thickets, various |< —--34/77:- 
and Que.— XENA 
provinces, Fla. to Tex., S. D., 
Sum.-fall. 
3. S. paucifiora (Benth.) S. Wats. Stem diffuse or are Ms 1.5-3.5 
a long ; Ape linear to lanceolate: corolla pale pe rple; of Ld stand- 
J— 
-8 broad: pod 2-3 
River bui various provinces, Miss. to Tex., Colo., S D., Ind Z —fall. 
59. VIGNA Savi. ois Leaflets 3. Racemes or panicles cluster-like. 
Calyx slightly 2-lipped, : upper lip broad, shorter than the lower lip, the 
middle lobe of the aln ER slightly longer than the lateral ones. Corolla 
yellow or purple: blades of the wings and the keel-petals ei broad, with 
an angular or reflexed auricle at the base. Pod narrow.—About 30 species, 
natives of warm and tropical regions 
a oa yellow: pod 6.5 cm. long or less: seeds irregular turgid, round-cubic, 
arly or quite as thick as high: plant pubescent. 
Blades of the le s acute or acuminate at the apex: lower lobes of the ealyx 
acute or acumina 1. V. repens 
Blades of the eaflets rounded iue emarginate at the apex: 
lower lobes of the calyx obtus 2. V. marina. 
Corolla mainly purple or violet: Dod 12 em. long or more: seeds 
reniform, flattened, much thinner than high; plant glabrous. 3. V. sinensis. 
