ALABASTRA BORNEENSIA. 245 



British North Borneo, Mount Kinabalu, Marai Parai 

 Spur, Mrs. Clemens 11078, December 2, 1915, ;on a forested 

 ridge, altitude about 2000 meters, the fruits green. 



The alliance of this species is clearly with Timonius l-oor- 

 dersii, Valeton, of Celebes, from which it differs in numerous 

 characters, notably its lanceolate, slenderly acuminate, much 

 longer stipules, thicker, somewhat smaller leaves, shorter pedi- 

 cels, and fewer pyrenes. 



CGMPOSITAE. 



Lactuca, Linnaeus. 



Lactuca retrorsiderts, sp. nov. 



Herba nana, '. glabra, 6 ad 10 cm. alta, foliis omnibus 

 radicalibus, longe petiolatis, oblongo-obovatis, 1 ad 3 cm. 

 longis, apice rotundatis apiculatisque, deorsum angustatis, basi 

 cuneatis, margine dentibus minutis sparsis retrorsis vel patulis 

 instructis; capitulis solitariis, circiter 7.5 mm. longis, circiter 

 10-floris, longe graciliterque' stipitatis, squamis exterioribus 

 numerosis oblougis ad oblongo-ovatis 1.5 ad 3 mm. longis, in- 

 terioribus circiter 8 anguste oblongis 6 mm. longis obtusis apice 

 minute ciliatis. 



A dwarfed, glabrous, perennial herb 6 to 10 cm. high, the 

 roots thickened, the very short caudex 1 cm. long or less, in- 

 cluding the persistent bases of the petioles about 5 mm. in 

 diameter. Leaves all radical, long-petioled, the blades green- 

 ish-olivaceous when dry, obovate to oblong-obovate, submem- 

 branaceous to chartaceous, 1 to 3 cm. long, 5 to 10 mm. wide, 

 apex rounded and apiculate, gradually narrowed below, the base 

 cuneate to decurrent-acuminate ; lateral nerves few, very slen- 

 der, obscure; petioles 1.5 to 6 cm. long, the margins on each 

 side with from two to five short, slender, acute, retrorse or 

 spreading teeth 1 mm. long or less. Heads solitary, about 7.5 

 mm. long, the scapes slender, 5 to 8 cm. long. Outer bracts 

 oblong to oblong-ovate, obtuse, glabrous, 1.5 to 2 mm. long, 

 „ succeeded by several oblong, 3 mm. long bracts, the innermost 

 involucral bracts about 8,- narrowly oblong, about 6 mm. long 

 and 1 mm. wide, the obtuse apices obscurely ciliate. Flowers 

 about 10 in each head, yellow. Achenes 1.2 mm. long, some- 

 what compressed, glabrous, slightly narrowed at the apex, 

 scarcely beaked, the pappus brownish, copious, about 1 mm. 

 long. 



British North Borneo, Mount Kinabalu, Low's Peak, 

 Mrs. Clemens 10623, November 13, 1915, in rock crannies 

 above the summit lakelet, the roots with milky juice. 



A very characteristic dwarfed species, readily distinguish- 

 able by its solitary heads ; its long-petioled, obovate to oblong- 



M. A. Soc, No. 77, 1917. 



