xm,c.2 Merrill: New Species of Bornean Plants 121 



que 4 vel 5, distantibus ; cymis axillaribus, tenuiter pedunculatis, 

 paucifloris ; floribus 5 ad 7 cm longis, curvatis, corollae tubo infra 

 leviter inflato deinde constricto, lobis lanceolatis, acuminatis, 

 circiter 2 cm longis, supra cohaerentibus. 



A scandent, rather slender, herbaceous plant, the stems terete, 

 twining. Leaves opposite, membranaceous, generally oblong, 

 sometimes oblong-ovate, rather pale and shining when dry, the 

 apex acute to acutely acuminate, base rounded to subtruncate, 

 the lateral nerves 4 or 5 on each side of the midrib, curved, 

 distant, rather distinct; petioles 1.5 to 2.5 cm long. Cymes ax- 

 illary, few-flowered, their peduncles 5 to 7 cm long. Flowers 

 5 to 7 cm long, white or yellowish-white and purplish, the pedicels 

 2 to 3 cm in length. Sepals narrowly lanceolate, acuminate, 

 glabrous, 3 mm long. Corolla-tube pubescent within, somewhat 

 inflated at the base, then constricted, somewhat curved, again 

 inflated above the constriction, the lobes lanceolate, acuminate, 

 about 2 cm long, cohering by their apices. Follicles slender, 

 terete, about 25 cm long, curved. 



British North Borneo, Khota Balud to Kibayo, trail to Mount Kinabalu, 

 Mrs. Clemens 9810 (type), Topping 1U90, October 28, 1915, in thickets 

 along the trail. 



The genus Ceropegia is poorly represented in Malaya, this being the first 

 one to be reported from Borneo. The flowers are much larger than are 

 those of the Philippine Ceropegia cumingiana Decne. or of the Javan 

 C. curviflora Hassk. 



RUBIACEAE 



XANTHOPHYTUM Blume 

 XANTHOPHYTUM INVOLUCRATUM sp. nov. 



Frutex erectus, foliis junioribus subtus dense adpresse sub- 

 f errugineo-pilosus ; foliis chartaceis vel submembranaceis, oblong- 

 is ad oblongo-oblanceolatis, usque ad 18 cm longis, utrinque acu- 

 minatis, longe petiolatis, nervis utrinque circiter 15, perspicuis; 

 stipulis latissime ovatis, acuminMis, usque ad 1.8 cm longis ; in- 

 florescentiis subcapitatis, axillaribus, pedunculatis, bracteis brac- 

 teolisque magnis numerosis involucriformibus instructis. 



An erect shrub, the younger leaves densely appressed pilose 

 beneath, the indumentum subferruginous, shining, the sparse in- 

 dumentum on the older parts ferruginous to castaneous, the 

 branches and branchlets somewhat 4-angled. Leaves chartaceous 

 to submembranaceous, oblong to oblanceolate, 13 to 18 cm long, 

 3.5 to 6 cm wide, subequally narrowed to the acuminate base 

 and apex, olivaceous, the upper surface smooth, glabrous, the 

 lower somewhat pubescent on the midrib, nerves, and reticula- 



