264 PAPILIONACEAE. [Vor. IL 
2. CLADRASTIS Raf. Neogenyton, 1. 1825. 
Trees, with odd-pinnate leaves, no stipules nor stipels. Flowers showy, white, in termi- 
nal panicles. Calyx-teeth 5, short, broad. Standard orbicular-obovate, reflexed; wings ob- 
long; keel incurved, obtuse, its petals distinct. Stamens 10, all distinct; filaments slender; 
anthers all alike, versatile. Ovary sessile or nearly so; ovules few; style incurved, Pod lin- 
ear or lanceolate, short-stalked, flat, at length 2 valved, few-seeded. [Greek, brittle-branch.] 
A genus of 2 known species, 1 of the eastern United States, the other of Mantchuria. 
1. Cladrastis litea (Michx.) Koch. American or Kentucky Yellow-wood. 
} (Fig. 2046.) 
Virgilia lutea Michx. f. Arb. Am. 3: 266. Mig j. 1813. 
Cladrastis fragrans Raf. Cat. Bot. Gard. Trans. 12. 
Name only. 1824. 
Cladrastis linctoria Raf. Neogenyton, 1. 1825. . 
Cladrastis lutea Koch, Dendrol. 1:6. 1869. 
A smooth-barked tree, with maximum height 
of about 50° and trunk diameter of about 334°. 
Foliage nearly glabrous; leaves petioled; leaflets 
5-II, ovate, oval or obovate, stalked, 2-4’ long, 
pointed or blunt-acuminate at the apex, obtuse 
or the terminal one cuneate at the base; panicles 
many-flowered, drooping, 10’—20’ long; pedicels 
slender, 5//-9’’ long; calyx tubular-campanulate; 
corolla white, about 1’ long; pod short-stalked, 
glabrous, 2’-4’ long, 4/’-5’’ wide, 2-6-seeded. 
In rich soil, Kentucky, Tennessee and western 
North Carolina. Wood yellow, hard, strong, yield- 
ing a yellow dye; weight per cubic foot 39lbs. Flow- 
ers fragrant. June. 
a THERMOPSIS R. Br. in Ait. Hort. Kew. Ed. 2, 3:3. 1811. 
Perennial branching herbs, with sheathing scales at the base, alternate 3-foliolate leaves, 
and large yellow or purple flowers in terminal or axillary racemes. Stipules usually large 
and foliaceous. Calyx campanulate or short-turbinate, its lobes equal and separate, or the two 
upper ones united. Standard nearly orbicular, equalling the oblong wings and about equal- 
ling the keel. Stamens 10, incurved, separate. Ovary sessile or short-stipitate; ovules « ; 
style slightly incurved; stigma terminal, small. Pod sessile or short-stalked, flat (in our 
species), linear or oblong, straight or curved. [Greek, Lupine-like. ] 
About 15 species, natives of North America and northern and eastern Asia. Besides the follow- 
ing, 5 others occur in the southern Alleghanies and in the western part of the continent. 
Leaflets 1'-2' long; panicle elongated, usually long-peduncled; eastern. 1. TZ. mollis. 
Leaflets 14’-1' long; panicle short, short-peduncled; western. 2. T. rhombifolia. 
1. Thermopsis mollis (Michx.) M. A. Cur- 
tis. Alleghany Thermopsis. (Fig. 2047.) 
Podalyria mollis Michx. Fl. Bor. Am. 1: 264. 1803. 
Baptisia mollis DC. Prodr. 2: 100. 1825. 
Thermopsis mollis M, A. Curtis; A. Gray, Chlor. Bor, Am. 
147. pl. 9. a 1846. 
Erect, somewhat divaricately branched, 2°-3° high, 
finely appressed-pubescent. Leaves petioled, 3-folio- 
late; leaflets oval, rhombic-elliptic or obovate, entire, 
1/-2/ long, 9/’-15’’ wide, obtuse or acute, nearly ses- 
sile; stipules ovate or lanceolate, shorter than the pet- 
iole; racemes 6’—10’ long, mainly terminal; pedicels 
2//-6/’ long, bracted at the base; flowers yellow, about 
9’’ long; pod short-stalked in the calyx, linear, slightly 
curved, about 4’ long. 
Southwestern Virginia and North Carolina, in the 
mountains. July-Aug. 
