160 
one-fourth free, much overtopped by the acicular calyx-lobes: seeds 12 to 20 in each 
cell, roundish, with small ventral excavation.—High plains and hills west of the 
Pecos. 
3. OLDENLANDIA Plum. 
Low herbs, with small stipules united to the petioles, 4-lobed per- 
sistent calyx, rotate 4-parted corolla, 4 stamens, style 1 or none, 2 stig- 
mas, and a thin 2-celled pod, with very numerous minute and angular 
seeds. 
1. O. Boscii Chapman. Diffusely spreading, slender and glabrous: leaves linear 
with an attenuate base, 2.5 em. or less long, obscurely 1-nerved: flowers few or sol- 
itary and nearly sessile at the axils: calyx-teeth broadly subulate, rather shorter 
than the pod.—A species of the Gulf States in low or wet ground, and extending into 
Texas. 
2. O. glomerata Michx. Erect or soon diffuse, freely branching, somewhat hir- 
sutulous-pubescent: leaves from ovate to oblong, thinnish, 12 mm, long, contracted 
at base as ifpetioled: flowers in terminal or lateral sessile glomerules (rarely soli- 
tary): calyx-lobes ovate or oblong, foliaceous, longer than the subglobose or hem- 
ispherical hirsute pod,—Low_ grounds, near the coast, throughout the Atlantic and 
Gulf States, and extending along the Texan coast. 
4. CEPHALANTHUS L. (Bu?rToNn-BUSH.) 
Shrubs, with the white flowers densely aggregated in spherical pe- 
duncled heads, inversely pyramidal calyx-tube with 4-toothed limb, 
tubular 4-toothed corolla, thread-form much protruded style, capitate 
stigma, and dry hard small inversely pyramidal 2 to 4-celled fruit, 
1. C. occidentalis L. Smooth or pubescent: leaves petioled, ovate or lanceo- 
late-oblong, pointed, opposite or in whorls of 3, with short intervening stipules,— 
Swamps and along streams, throughout Texas. 
5. MITCHELLA L. (PARTRIDGE-BERRY.) 
A smooth and trailing small evergreen herb, with round-ovate and 
shining petioled leaves, minute stipules, white fragrant flowers (often 
tinged with purple) in pairs with their ovaries united, 4-toothed calyx, 
funnelform 4-lobed corolla (the lobes spreading and densely bearded in- 
side), 4 stamens, 1 style with 4 linear stigmas, and a scarlet berry-like 
fruit crowned with the calyx-teeth of the two flowers, with 4 small seed- 
like bony nutlets to each flower. 
1. M. repens L. Leaves often variegated with whitish lines.—Dry woods, creep- 
ing about the fost of trees, throughout the Atlantic States and extending into Texas, 
6. RICHARDIA Houst., L. 
Hispid or hirsute perennials or annuals, with broadish subsessile 
leaves, setiferous stipules, leafy-bracted terminal glomerules of whitish 
4 to 8-merous flowers, ovate-lanceolate or narrower-calyx-lobes, funnel- 
form corolla, 2 to 4 linear or spatulate stigmas, and the 2 to 4 coria- 
ceous roughish carpels separating from apex to base, closed or nearly 
so and with no persistent axis. 
