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* Umbel terminal, sessile, subtended by two leaf-like bracts: leaves lanceolate. 
1. T. micrantha Torr. Low and rooting, slender, subpubescent: leaves 2.5 mm. 
long or less: flowers small (4 mm, long): filaments all hairy. —Southwestern Texas. 
2. T. leiandra Torr. Stout, 3 dm. high, rooting at base: leaves 5 to 7 em. long, 
somewhat villous or nearly glabrous: sepals more or Jess villous, 6 to 8 mm. long: 
filaments all naked.—Western Texas and New Mexico. A form from the Chenate 
mountains (Nealley), with insufficient flowering material, with short and rather 
broadly ovate leaves (4 to 5 em, long, 2.7 em, broad), has been referred to this species 
as var (?) ovaATA Coulter. 
** Umbels terminal (seldom lateral), sessile, subtended by 1 or 2 leaf-like bracts: leaves 
linear to narrowly lanceolate. 
3. T. VirginicaL. (COMMON SPIDERWOR?.) Roots fleshy-tibrous: smooth or only 
slightly villous, more or less glancous, often tall and slender: leaves linear: rarely 
lor 2 long lateral peduncles.—Throughout central and southern Texas. Var. VILLOSA 
Watson, from Gillespie County to the Gulf, is often dwarf, and more or less villous 
throughout as well as pubescent. 
3. TINANTIA Scheidw. 
syme prolonged and seorpioid: otherwise as Tradescantia. 
1. T. anomala (Torr.) Clarke. Tall, glabrous: leaves cordate-lanceolate: inflor- 
escence shorter than the upper leaf: flowers few: sepals 12 min. long. (Tradescantia 
anomala Torr,)—Shaded woods, eastern, central, and southern Texas. 
JUNCACEAE. 
By FREDERICK V. CovILLr. 
Herbaceous, grass-like plants (in the United States) of varied habit, 
principally perennials, with branching rootstocks and loosely or closely 
tufted stems; leaves, principally radical, with sheathing base, the blade 
flat and grass-like, or terete, or vertically compressed, or sometimes 
obsolete; flowers inconspicuous, single or in heads, upon the branches 
of an inflorescence having the form of a panicle with the lower arms 
successively longer and often unilaterally developed, passing therefore 
into a wide variety of forms, and sometimes reduced to a single cluster 
or a single flower; perianth consisting of 6 chartaceous divisions. 
1, Juncus, Capsule many-seeded, 3-celled with axial placentie, or 1-celled with 
parietal intruded placenta, 
2. Juncoides. Capsule 1-celled, with 3 seeds borne upon a basal placenta, 
JUNCUS L. 
Perennial or annual plants devoid of hairs, with terete or sub- 
compressed leafless or few-leaved stems, principally radical leaves, 
their blades either transversely tlattened, subterete, or compressed, 
inconspicuous green to brown-purple tlowers, and minute deli ‘ately 
ribbed or reticulated seeds. 
