400 MR, Е. N. WILLIAMS ON 
18. ARENARTA ACICULARIS, sp. n. (Subg. Lremoyoneastrum, sect. 1.) 
Radix prælonga crassa lignosa. Caudex lignosus polycephalus. Caules 
65 mm., simplices, scabre pubescentes. Folia lineari-acicularia, trinervia, 
lateralibus marginantibus ; floralia lanceolato-linearia pungentia, margine 
scariosa, basi late searioso-vaginantia, Flores in dichasium fasiculato- 
glomeratum 6-9-florum dispositi, pedicellis glanduloso-pilosis suffulti. Calyx 
basi rotundatus, haud incrassatus ; sepala lanceolata acuminata tenuiter 
trinervia, nervis approximatis, late scarioso-marginata, apice recta, parte 
scariosa sæpius purpureo-incarnata. Petala obovata, calyce sesqui-duplo 
longiora. Capsula obo 'ato-oblonga. 
Flowers much smaller than in A. Festucoides, and more crowded at the top 
of the flowering stem ; leaves longer and narrower, never falcate. Somewhat 
like A. Przewalskii, but the leaves in the latter are rough-edged, those of 
the shoots are obtuse, the суше is three-flowered, and the disk-glands 5 
(not 10). 
Kannali River, 1848, at 4730 m. (Strachey & Winterbottom, * A. festucoides," 
non Benth.). Tibet, without locality (* Fl. of Thibet," n. 66, 1882, and n. 286, 
1884, King’s collector) ; Khamba Fort, 1903 (Col. Prain, n. 1209) ; Gyangtse, 
1904 (Capt. Walton, п. 95, n. 1116); Phembu Pass, 10-15 miles north of 
Lhassa, and Yam Doh Cho, 1904 (Capt, Walton, n. 1117, n. 1118) ; Lhassa, 
at 3600 metres, 1904 (Col. Waddell). 
19. ARENARIA ISCHNOPHYLLA, sp. п. (Ejusdem sect.) 
Dense arcteque ewspitosa. | Caudex lignosus polycephalus ; rami dense 
foliati. Folia 7-9 mm. vel paullo longiora, subtriquetra rigida pungentia 
uninervia, basi scarioso-vaginantia, margine incrassata. Flores pauci, breviter 
pedieellati, pedicellis pilosis. Calyx basi truncatus; sepala 4 mm. long., 
lanceolata acuminata, apice recta, trinervia, nervis lateralibus tenuioribus, 
ultra nervos late scariosa. Petala 5 mm. longa, alba ovato-elliptica, calycem 
paullum excedentia, basi obsolete unguiculata, apice rotundata. Ovarium 
globosum. 
Near A. kansuensis, in which the mass of flowers almost conceals the 
dense short leaves, whereas in A. ischnophylla the dense longer leaves 
conceal the few flowers. 
Khamba Fort, 1903 (Cot, Younghusband, n. 107). 
20. ARENARIA MONTICOLA, Edgew. 
Phari (Dungboo, 1877, n. 4559, 1879, n. 1146) ; Syam-poo, in Chumbi 
district ( King’s collector, 1884, n. 112, n. 1164). 
21. ARENARIA KANSUENSIS, Maxim. 
Karoo Pass, 15 miles from Lhassa, at 5000 m, (Dungboo, 1878, n. 1152 ; 
