1196 RHINANTHACEAE 
Corolla white, glabrous, rotate, lobes longer than the tube, the 2 posterior 
united to apex, so appearing as one lobe which is smaller than the other 3. 
seareely projecting bases. Stigmas lip-like, 
borne on the distinet VP tips. Capsule 
globose, glabrous, at maturity one-celled, 
rupturing a by the break-down of 
Seeds 
the thin wall numerous, yellowish, 
cylindric, prismatic angled, with fine trans- 
verse lines.—Two or 3 species, American. 
1. G. umbrosa UE. J. F. Gmel. Ste 
0.5-3 dm. long, slender: leaf-blades 0.3- 11 
cm. long, n cuneately narrowed at 
dde pedieels 0.5-1 mm. long: sepals 1.5 
. long: corolla 1.5 mm long: capsule 1 mm. long. Ma orbicu- 
latum Michx. n inco M. often in n shallow pools, Coastal Plain, C pen. 
N. , S. A.) —Spr.-fall.—The suborbieular leaf-blades 
Fla. to Tex 
are usually s less in X em. ». long. 
15. HEMIANTHUS Nutt. Creeping glabrous annual herbs, extensively 
branching and forming small mats. Leaves oppo or in threes: blades en- 
tire, not glandular-punctate, sessile. Flowers ke to leaf-like bracts. 
Bractlets none. Sepals 4, united at least half their length, but on the anterior 
side distinct E to bos Corolla 1-lipped, open nearly to base on the 
posterior side (the posterior lobes ME laeking), the lip deflexed- pna s 
ing, 3-lobed, pubescent with short yellow hairs on the two ridges the 
sinuses. Filaments two (only the antero-lateral present), Md distally 
as two yellow- pubescent processes just below the bases of which upeurve the 
e 
Un 
= 
i) 
t4 
Lar 
b 
<i 
en 
ed 
c5 
ct 
c 
S 
. e © 
e 
= 
= 0 
=) 
e 
[qv] 
[Ue] 
d 
e 
S 
ru zu us irregularly by the break-down of 
the thin wall. Seeds numerous, yellow, cylin- 
drie, prismatie-angled, with fine transverse 
lines.—About 7 species, mostly West Indian. 
1. H. glomeratus (Chapm.) Pennell. Stem 
0.2-0.5 dm. long (or, when submersed, occa- 
m. long), slend 
sionally 2 dm. long), slender: leaf-blades 
2—0.3 long (or, when submersed, reacl 
ing 0.7-0.8 em. long), euneately narrowed | 
at base: pedicels very short, usually about 0.5 mm. long: calyx 1 mm. long; 
lobes acute, about 14 the length of the tube: corolla 1.5-2 mm. long, white, 
anterior lobes short: e mm. lon icranthemum Nuttallii glomera- | 
Hemianthus micranthemoides (Fl. SE .)]—Sandy shores of 
lakes and rivers, Coastal Plain, pen. Fla——spr r.—fall or ‘all year S 
16. LEUCOSPORA Nutt. Erect, hairy, annual, much branched herbs. 
Leaves opposite: blades decas d not punctate, petioled. — Braetlets 
Sepals 5, distinet, linear-attenuate, uniform. Corolla personate: lobes 
e than the tube, the two posterior united nearly to apex, the anterior 
