46 LXXV. RUBiACEjfi. (J. D. Hooker.) [Argostemma. 



17. A. spinulosura, C. S. 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 6 

 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 l in., base contracted 

 obliquely, auricled, nerves spreading raised beneath, petiole ^ in. ; smaller in., more 

 membranous. Umbel and peduncle quite glabrous. Flowers % in. diam. Calyx-lobes 

 triangular-ovate, acuminate. Corolla-lobes lanceolate. 



DOUBTFUL SPECIES. 



A. iNJEQUiLATERUM, JBenn. PL Jav. Ear. 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. verticiUatum. 



A. SONERILOIDES, Kurz in Journ. As. Soc. 1872, ii. 310; calyx-lobes 3-4; corolla 

 subcampanulate, 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. CZ.AXIK.EX.Z.A, Ifool-.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. Calyx-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. nan a, Hook. f. Ophiorhiza nana, Edgw. in Trans. Linn. Soc. xx. 60. 



TEMPERATE HIMALAYA, alt. 4-8000 ft. Kumaon, Edgworth, &c. ; G-arwhal, 

 Falconer. 



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 thick 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 |-l| 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 s small leaves close to the cyme. 

 Cyme on a stout peduncle -{ in. long : bracts small, oblong. Flowers shortly pedi- 

 celled, erect, in. long. Calyx-lobes triangular with acuminate tips. Corolla pubes- 

 cent. Stamens and style near the very base of the corolla-tube. Fruit ^ in. long. 

 Named after my coadjutor in this work, C. B. Clarke, F.L.S. 



17. NEURO CALYX, Hook. 



Low herbs. Leaves opposite, crowded, membranous, entire or., toothed, 

 reticulate ; stipules large, 2-fid, or multifid. Flowers rather large, pale purple, 



