404 
branchlets (from which arises a solitary long-pedicelied pistillate flower), narrowly 
obovate, with a3-nerved cuneate base, 15 to 30mm. long and 4 to9 mm. wide, equalling 
the hairy pedicels: sepals 5, hairy, lanceolate: stamens 10: pod 6 mm. long, 9 to 10mm. 
broad, with rounded lobes, smooth or somewhat granulate: seeds round ovate, 
slightly angular (4 mm, long), with adistinet hilum. (Huphorbia Vaseyi Coulter, Contr. 
Nat. Herb. I, 48.)—Brazos Santiago and Boonville. ‘The species falls into the old 
genus ddelia and follows the merging of that genus into Ricinella. 
13. TRAGIA I.. 
Erect or climbing perennial pubescent or hispid herbs (sometimes 
stinging), with mostly alternate stipulate 1 ‘aves, MonCCIONS apetalous 
small flowers in terminal or lateral racemes (fertile at base of sterile), 
sterile calyx 3 to 5-parted, fertile 3 to 8-parted and persistent, 2 or 3 
stamens with short filaments and united anther-cells, 3-cleft (or parted) 
style, and 3-celled 3-lobed bristly pod separating into three 2-valved 
1-seeded carpels. 
1. T. urens L. Erect, paniculately branched, softly hairy-pubescent (1.5 to 3 
dm, high), not stinging: leaves varying from obovate-oblong to narrow linear, acute 
at base, obtusely or sinuately few-toothed or lobed, sometimes entire, short-petioled 
or sessile, paler beneath: sterile calyx usually 4-parted: stamens 2. (7. innocua 
Walt.)—Hills of the lower Rio Grande, 
2. T. nepetefolia Cav. Erect or reclining or slightly twining, hirsute with 
stinging hairs: leaves ovate-lanceolate or triangular-lanceolate, or the lower ovate, 
all somewhat cordate or truncate at base, coarsely cut-toothed, short-petioled: ster- 
ile calyx usually 3-parted: stamens 3. (7. urticafolia Michx.)-—Valley bottoms of the 
Pecos and the lower Rio Grande. Var. ANGUSTIFOLIA Muell. has erect stems, tri- 
angular-lanceolate leaves obtuse at base, and the upper linear-lanceolate or sub- 
linear.—From the Limpia to San Diego. 
3. T. macrocarpa Willd. Twining, somewhat hirsute: leayes deeply cordate 
ovate, mostly narrowly acuminate, sharply serrate (7 to 12 em. long), all but the 
uppermost long-petioled: pod 12 mm. broad, (7. cordifolia Michx.)—Alonge the Gulf 
from Florida to Mexico, 
4. T. stylaris Muell. Similar to 7. nepetefolia, but easily distinguished by its 
4 or 5-parted sterile calyx, 4 or 5 stamens, and elongated styles.—From Kansas to 
western Texas. 
14. STILLINGIA Garden. 
Smooth upright plants, with alternate leaves (iInostly 2-clandular at 
base), monccious flowers aggregated in a dense terminal spike (fertile 
at base), bracts with a gland on each side, no petals or glands of the 
disk, 2 or 3-cleft (or parted) calyx, 2 or 3 stamens (the adnate anthers 
turned outward), thick style, 3 diverging or simple stigmas, 3-celled 
3-lobed 3-seeded pod, and carunculate seed. 
* Perennials: spikes terminal. 
1. S. sylvatica L. Herbaceous: stems clustered, erect or ascending (3 to 9 din, 
high), from a woody root, umbellately branched: leaves nearly sessile, oblong: lan- 
ceolate, serrulate (2.5 to 5 em. long): glands of the spike saucer-shaped: stamens 2: 
pod roughish.—Sandy and dry soils, extending from the Southern States to western 
Kansas and Texas, 
