46 LXXV. RUBIACEX. (J. D. Hooker.) [ Argostemma. 
17. A. spinulosum, C. B. Clarke; stem stout hispid with curled hairs, 
large leaf of each pair petioled oblanceolate acute, glabrous above with minute 
spinulose hairs on and near the margin, hairy on the nerves beneath, smaller 
ovate-lanceolate acuminate, umbels forked compound many-fld., anthers 5 
coherent subulate produced into a short beak. 
SINGAPORE, Lobb. 
Only one specimen seen. Stem 4 in., very stout, flexuous and rooting below. 
Leaves rather thick and succulent in 4 pairs, the larger 4-5 by 14 in., base contracted 
obliquely, auricled, nerves spreading raised beneath, petiole 4 in. ; smaller H in., more 
membranous. Umbel and peduncle quite glabrous. Flowers 3 in. diam. — Calya-lobes 
triangular-ovate, acuminate.  Corolla-lobes lanceolate. 
DOUBTFUL SPECIES. 
A. INJIQUILATERUM, Benn. Pl. Jav. Rar. 95; “leaves usually 4 in a whorl more 
or less unequal, lanceolate or ovate-lanceolate unequal-sided acuminate glabrous; 
umbel subsimple few-fid ; flowers 5-merous."— Perhaps A. verticillatum. 
A. SONERILOIDES, Kurz in Journ. As. Soc. 1872, ii. 310; calyx-lobes 3-4; corolla 
subeampanulate, 3—4-lobed; leaves whorled; anthers oblong obtuse.—Andaman 
Islands, Kurz.—Very imperfect specimens from Dr. King do not enable me to refer 
this satisfactorily to any described species: it resembles tavoyanum. 
A. OLIGANTHA, Kurz in Journ. As. Soc. 1877, ii. 131.—An Andaman species and 
another of Kurz, from Boronga Island, on the Arracan coast, are not recognisable. 
16, CLARKELLA, Hook. f. 
A very small erect glabrous puberulous herb. Leaves opposite, petioled, 
ovate, one of the lower pair usually suppressed, the other very large; stipules 
minute, broadly ovate, or obsolete. Flowers 1-6 in., in peduncled terminal 
bracteate cymes, white. Calyz-tube obconic, produced above the ovary; limb 
dilated, 5-7-toothed. Corolla-tube long, slender, funnel-shaped above, throat 
glabrous; lobes 5, lanceolate, valvate. Stamens 5, near the bottom of the tube, 
filaments short slender; anthers linear-oblong. Ovary 2-celled; style short, 
arms 2 slender hairy; ovules many, on ascending placentas attached to the 
septum below its middle. Capsule obconic, 5-7-ribbed, crowned with the 
dilated calyx-limb, membranous, indehiscent, many-seeded. Seeds very minute, 
irregularly ellipsoid, testa black papillose. 
1. C. nana, Hook. f. Ophiorhiza nana, Edgw. in Trans. Linn. Soc. xx. 60. 
TEMPERATE HiMALAYA, alt. 4-8000 ft. Kumaon, Edgworth, &c.; Garwhal, 
Falconer. i 
A very singular little plant, requiring examination in a living state as to its mode 
of growth. Stem 1-3 in., slender, simple, curved upwards, terminating below in a 
small fleshy tuber enclosed in a rather thiek sheathing coat, the outer surface of 
which coat is clothed with short rigid rootlets that adhere to surrounding particles of 
sand and ground by suckers, Radicle-leaf 3-1} in. diam., solitary, orbicular or 
broadly ovate, obtuse, membranous; nerves 4-5 pair, spreading and arching; petiole 
slender; besides this leaf there is a single pair of small leaves close to the gyme. 
Cyme on a stout peduncle }—4 in. long; bracts small, oblong. Flowers shortly edi- 
celled, erect, 5 in. long. ` Ca/yz-lobes triangular with acuminate tips. Corolla ptbes- 
cent. Stamens and style near the very base of the corolla-tube. Fruit 4 in. long.— 
Named after my coadjutor in this work, C. B. Clarke, F.L.S. | 
| 
17. NEUVROCALYX, Hook. | 
„Low herbs. Leaves opposite, crowded, membranous, entire or toothed, 
reticulate; stipules large, 2-fid, or multifid. Flowers rather large, pale purple, 
