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RUBIACE. CXCIV. Mrrracarpum. CXCV. CrucxsHanxsta. 
front, and marked by 4 rays. Perhaps the same as M. scà- 
brum, Zuccar. in Reem. et Schultes, syst. 3. p. 210. which was 
found about Fort Louis. 
Senegal Mitracarpum. Shrub. 
** Annual plants. 
10 M. Torresta‘num (Cham. et Schlecht. in Linnea. 3. p. 
360. t. 3. f. 2.) stem erect, simple, somewhat tetragonal, rather 
pilose on the angles; leaves elliptic-lanceolate, attenuated at the 
base, membranous, *rather downy on both surfaces; stipulas 
membranous, with white villous bristles; flowers disposed in 
capitate whorles, the terminal one usually formed of 2 combined 
heads, and girded by 4 leaves. ©. F. Native of Guajan and 
Marianne Islands. “Flowers white. 
Torres's Mitracarpum, Pl. 24 foot. 
11 M. vitzdsum (Cham. et Schlecht. in Linnea. 3. p. 363.) 
stem erectish, sparingly branched, slightly tetragonal, villous ; 
leaves oval-lanceolate, downy; stipulas membranous, cleft into 
many bristles; heads of flowers axillary, verticillate, and ter- 
minal, the latter girded by 4 leaves; anthers inclosed. ©. F. 
Native of Jamaica. Spermacoce hirta, Jacq. icon. rar. t. 308. 
and probably of Lin. Spermacice villdsa, Swartz, obs. p. 45. 
Corolla white. Anthers yellow. Seeds pale, somewhat 
peruse on the back, and marked by a cruciate furrow in 
Villous Mitracarpum. FI. June. 
1 foot. $ 
12 M. mírtum (D. C. prod. 4. p- 572.) stem erect, branched, 
scabrous, tetragonal; leaves ovate-lanceolate, clothed with hairy 
ence ; stipulas membranous, with many bristles: axillary 
eads of flowers verticillate ; terminal ones girded by 4 leaves ; 
ae exserted. ©. F. Native of Jamaica, in dry, grassy 
oe and of the Society Islands. Spermacdce hirta, Swartz, 
la p. 45. Very like M. villòsa, but differs in being more 
E = in the anthers being exserted and blue, and in the 
ny emg smaller, blacker, and concave in front, not with 4 
Food Mitracarpum. FI. June, July. Clt. 1818. Pl. 3 to 
ene M. Fiscue‘rt (Cham. et Schlecht. 3. p. 363.) stem erect, 
T ’ eral: leaves oblong, attenuated at the base, acute, 
a ae rom very short hairs ; ‘stipulas ciliated ; flowers densely 
Re rele teeth of calyx 4, lanceolate, acute, a little 
i a than the corolla. ©.F. Native of Jamaica. Sperma- 
‘sek ischéri, Link. enum. 1. p. 132. Spermacdce adscéndens, 
“ty ined. Corollas white. Habit of Spermacdce áspera, 
oes Mitracarpum. Fl. May, June. Clt. 1821. Pl. 
AN m sTYLÒsUM (Cham. et Schlecht. in Linnæa. 3. p. 363.) 
sr €cumbent, terete, glabrous ; leaves oblong-lanceolate, 
pete at the base; bristles of stipulas long; flowers dis- 
tal in dense whorles ; the two large teeth of the calyx are 
nill ara the apex ; style exserted. ©. F. Native of Ma- 
cay Permacoce stylosa, Link. enum. 1. p. 132. Sperma- 
nij crassifolia, Hortul. Capsule membranous, glabrous. Co- 
; as white. Seed orbicular, with a mark like the letter x 
aha on the front, somewhat 4-lobed, of a pale, dirty 
l ine-styled Mitracarpum. FI. May, June. Clt. 1819. PI. 
July. Clt. 1816. Pl. 4 to 
§ 2. Calyx with 4 nearly equal acutish teeth. 
whee M. wecre’crum (D. C. prod. 4. p. 573.) plant glabrous, di- 
of mous ; leaves oblong-linear, acute, almost veinless ; bristles 
Stpulas 3, stiff, longer than the sheath; heads of flowers 
CXCVI. Sracrtia. 631 
terminal, 3 times shorter than the bracteas ; calyx glabrous, with 
4, hardly acute teeth, which are a little shorter than the corolla. 
—wNative of Brazil, where it was collected by Pohl. Spermacoce 
neglécta, Schott ex Pohl, in litt. Heads of flowers 5 lines in 
diameter. Floral leaves about an inch long, and 2 lines broad. 
Neglected Mitracarpum. Pl. ? 
+ Species not sufficiently known. 
16 M. sauarro'sum (Cham. et Schlecht. in Linnea. 3. p. 
363.)—Native of Cuba, on rocks about Havannah. Spermacoce 
squarrosa, Poepp. Nearly allied to M. Sellowianum, but differs 
in its smoothness. 
Squarrose Mitracarpum. PI. 
Cult. See Borreria, p. 618. for culture and propagation. 
CXCV. CRUCKSHA’NKSIA (named after Mr. Cruck- 
shanks, the original discoverer of the plant, and a particular. 
friend of both Hooker and Arnott). Hook. et Arn. in bot. 
misc. 3. p. 361. but not of Hook. in bot. misc. vol. 2. t. 90. 
Lin. syst. Penténdria, Monogy’nia. Calyx with a globose 
subdidymous tube, and a 5-toothed limb ; teeth usually furnished 
with an accessory small subulate tooth on each side ; one or two 
of the teeth are usually expanded into large reticulated peduncu- 
late roundish membranous wings. Corolla salver-shaped, with 
an elongated tube, a 5-cleft spreading limb, and a glabrous 
throat. Stamens 5, exserted, inserted in the mouth of the 
corolla. Filaments club-shaped, acute; anthers linear-oblong, 
fixed by the base. Style filiform, a little longer than the tube 
of the corolla; stigma bifid, pilose: the divisions linear and 
acute. Capsule membranous, globose, subdidymous, crowned 
by the more or less widened calycine segments, 2-celled, 4- 
valved; cells 2-seeded; valves ovate, very concave, boat- 
shaped, 1-nerved in the middle, separable from the thin mem- 
branous white dissepiment. Seeds large, obovate, black, tu- 
bercled, very deeply furrowed on the inside at the hylum. 
Albumen horny. Embryo central, very much curved; cotyle- 
dons flat; radicle nearly terete, inferior, elongated.—The whole 
plant is more or less pubescent. Root perennial, dividing into 
many stems at the neck. Stems herbaceous, terete, ascending, 
flexuous, branched. Leaves obovate-lanceolate, acute, tapering 
into the petiole, stipulate; stipulas interpetiolar, broad-subulate, 
free, or joined more or less. Bracteas involucra-formed, simple 
or tripartite, furnished with small subulately toothed stipulas at 
the base on both sides. Peduncles terminal and axillary. 
Flowers disposed into a rather large depressed cyme : having 
the corolla and calycine wings yellow. 
1 C. uyme’nopon (Hook. et Arn. l. c.)—Native of Chili, 
about Coquimbo. There are varieties with hoary or less pubes- 
cent leaves. This most extraordinary plant has little of the 
general appearance of any of the Rubiàceæ, although in its most 
striking peculiarities, the dilatation of some of the calycine teeth 
into disproportionably large orbicular, or somewhat reniform 
petiolate wings, it has an affinity with Mussæ'nda. Its place in 
the order is, however, near Spermacoce and Mitracarpum. 
Membrane-toothed Cruckshanksia. Pl. 
Cult. See Richardsonia, p. 628, for culture and propagation. 
CXCVI. STAELIA (this genus is dedicated to the illus- 
trious Baron Augustus de Stael Holstein). Cham. et Schlecht. 3. 
p- 364. t. 3. f. 3. D.C. prod. 4. p. 573. 
Lin. syst. Tetrándria, Monogynia. Calyx with an ovate 
tube, and only 2 subulate teeth, with hardly any accessory ones. 
Corolla funnel-shaped, with a slender tube, and a 4-lobed acute 
limb. Stamens 4, exserted. Stigma 2-lobed. Capsule mem- 
branous, 2-celled, 2-valved, with an entire permanent dissepi- 
ment; valves concave, crowned each by acalycine tooth, cut at the 
