RUBIACEJE, (MADDER FAMILY.) 175 
dense, many-flowered; corolla barely longer than the lanceolate calyx-teeth, 
white, woolly within; stamens and style included; fruit obovate. — Banks of 
rivers, Florida and westward. June. )| — Stem 19-2? high. 
2. S. Chapmanii, Torr. & Gray. Stem erect, smooth, slightly angled ; 
leaves oblong-lanceolate, acute, rough above and on the margins; clusters few- 
flowered ; corolla white, hairy within, 2-3 times as long as the calyx; stamens 
and slender style exserted; fruit turbinate. — Dry soil, Florida, Georgia, and 
westward. July. )| — Stem 6' -12' high. 
3. S. tenuior, L. Stem slender, erect or prostrate, branching from the 
base, terete, smooth ; leaves lanceolate, rough above, remote; clusters small, 
mostly few-flowered ; flowers minute, the smooth white corolla barely longer 
than the subulate tooth of the calyx; stamens and style included ; fruit dens 
hairy.— South Florida, in dry soil. (1)— Stem 3"- 12! Jong. 
4. S. involucrata, Pursh. Stem alternately branched, very hispid ; leaves 
ovate-lanceolate, acuminate, hirsute on both surfaces; stipules with many bris- 
tles; heads terminal, involucrate; stamens exserted. — Carolina, Frazer. — 
About a foot high. Leaves somewhat oblique. Flowers white with a very long 
tube. Pursh. (*) 
3. BORRERIA, Meyer. 
S Clrpels of the fruit separating from the | apex dont wart. both opening Vat 
wise on the inner face. Otherwise like Spermacoce, both in character and habit. 
l. B. micrantha, Torr. & Gray. Annual; stem erect, slender, simple or 
branched above, 4-angled, smooth; leaves remote, lanceolate, mostly obtuse, 
narrowed at the base, the upper surface and margins rough, the lateral veins 
obscure; clusters dense, globose, axillary and terminal; calyx-teeth 4, subulate, 
longer ión the minute (white) corolla ; fruit ovoid, hairy. — Waste places, Flor- 
ida. June- - August. — Plant 6'- 18/ high, pale green. Leaves 1’ long. 
2. B. podocephala, DC., var. pumila. Stems low (3/—6/), smooth, 
erect or ascending, branching at the base ; leaves smooth, linear, with the mar- 
gins revolute, those in the axils clustered, the floral ones mostly 4, longer than 
solitary terminal long-peduncled globose head; stipular bristles 2—4; fruit 
nt, ovoid, crowned with two subulate spreading calyx-lobes; corolla 
Somewhat funncl-shaped, mostly 3-lobed, smooth within; npe capitate. — ` 
Pine Key, South Florida, Dr. Blodgett. 
4. DIODIA, L. 
eode. chiefly of Spermacoce, but the two bony indehiscent carpels closed 
on the i inner face, — Herbs. Corolla-tube often long aud slender. Flowers few 
9 solitary in the axils of the narrow leaves. 
l. D. Virginiana, L. Perennial; stie aut: Mis smooth, 
hirsute; stem Mone, zoet leaves somewhat fleshy, | n 
single, oi cluster hairy within 
Wm 
