O€TANDRIA. MONOGYNTA,, 
which it is nearly allied, but cannot possibly be the sate 
species, being by the calix much more nearly related to #. 
glabeila, but the leaves, habit, and angular stem, separate 
it from that species; in J2. ciliosa the border of the Calix is 
iwvemarkably large, the segments expanding nearly to tl-¢ 
length of the ventricose base, and not coalescing into a 
tube as is usual in this genus. Ops. About 6 to 10 inches 
high; leaves nearly as broad as long, about 5 lines; regu- 
jarly and mucronulately serrulate, the radical leaves nearly 
round, and with the margins more entire; flower purple, 
as large as that of R. glabdella, solitary aud terminal, o¢ 
simply in 3s; never subcorymbose. | 
* §. glabella. The ee and most ornamental of the 
species i s to the United States. Stem nearly cy- 
: s 
__ lindric, and very smooth, as well as the whole plant, with 
- the exception of the calix; leaves lanceolate, sessile, and 
entire; calix glandularly hirsute, bordef minute, flowers 
subcorymbose. Hoot tuberous, perpendicular, and very 
large, with a spongy bark, stems 2 to 3 feet high, and con- 
siderably branched. 6. stricta, Pu. Apparently a variety 
of #2. glabella. 
7. lutea. Every where glandularly pilose, but particular: 
ly the stem, which is obtusely quadrangular; lower leaves 
ablong-obtuse, the upper much smaller and acute; calix fun- 
nelform, with a conspicuous and acute border; petals yel- 
low, rather small, as well as the stamina, which are erect. 
OBs. Hoot perennial, fibrous. Stem about 12 inches, quad- 
rangular, branchlets approximating towards the summit of 
_ the stem, 1 and rarely 3-flowered, petals oval and obtuse; 
rs about the size of (2nethera sinuata 
‘8. linearifotia. Stem cylindric pubescent, leaves alternate, 
linear-oblong, obtuse, sessile, every where pubescent; flow- © 
ers solitary.—Lamark, Encycl. 6. p. 2.. In Carolina. Bose- 
Flowers yellow. A variety of the preceding? 
9. * angustifolia. Stem subterete, hirsute, leaves linear- 
lanceolate, somewhat oblong, hirsute, axills foliose; flowers 
_ cymese, cyme bifid; calix cylindric, short, and very smooth. 
Stamina declinate. #. lanceolata, Walter. Ft. mariana, ¥- 
 evalbida, Mich. Flor. Am. 1.p.221. Has. Around Savan- 
_ nah, in Georgia, also in Carolina. Ops. Stem one anda balf 
to two feet high, leaves numerous and, narrow, scarcely 
S-nerved, subpetiolate; flowers constantly disposed in 4 
naked, bifid cyme, never in a trichotomous panicle as in 
R. mariana; calix very smooth; in R. mariana twice as long © 
and bairy; flowers smaller, nearly white. : 
This genus ot about 30 species, excepting the above, is 
exclusively indigenous to the tropical parts of America- 
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