THE VEGETATION OF THE ZEMU, 
ceolato-ovata vel obovata, sessilia, vix subamplexicaulia, cras- 
siuscula, ad 6 inm. longa, ad 3-5 mm. lata, apice obtusissima 
vel rotundata, marginibus in angulas caulinas decnrrentibus. 
Flores in apicibus internodiorum ad 7 mm. longorum producti, 
pallide coBrulei. Sepala 5, libera, exteriora obovato-oblanceolata 
obtusiuscula, interiora duo oblanceolata acutiuscula, 6 mm. longa, 
2-2*5 mm. lata, trinervia. Corolla tubus ad 4 mm. longus, basi 
decern glandulis notatus, filamentorum cruribus adnatis per- 
cursus, lobi 5 j contorti, cuspidato-rotundati, margine minutissime 
serrulato et enira apicem versus aliquomodo undulato, 2 mm. longi. 
Stamina 5, filamentorum partes liberse vix 1 mm. longae ; antherae 
dorsifixsB : pollen sphaeroideo-tetrabedroideum. Ovarium elongatum, 
ad 6 mm. longum : stylus 1 mm. longus : placentae inconspicuissimae. 
Semina ovoidea, lasviora. 
Llonakh, ISjObo ft., No. 2183. 
315. Pleurogyne Esohscb. 
619. Pleurogyne sikkimensis Burkill. 
Naku La, Llonakh, 15-16,000 ft.. No. 2774 Ribu. 
630. Pleurogyne Iloydioides Burkill. 
Thango, 14,000 ft.. No. 2482. 
630b* Pleurogyne aff. P. Thomsoni Clarke. 
Naku La, 15,000 ft.. No. 2763 Ribu. 
316, Swertia Linn. 
631. Swertia dilatata Clarke. 
Cheungtong, 6,000 ft.. No. 2610. 
633, Swertia Hookeri Clarke. 
Zemu Valley, 11-14,000 ft.. Nos. 1220, 1623. 
633. Swertia cuneata Wall. 
Below Giagong, 14,000 ft.. No. 2879 Ribu. 
634. Swertia multicaulis Don. 
Zemu, Llonakh, and Thango, 14-17,000 ft., Nos. 1310, 1425 
2725. Frequent. ^ 
317. Halenia Borckh.. 
635. Malenia elliptica Don. 
Lachen and Zemu, 7-10,000 ft., Nos. 2406, 2722. Common. 
ijv.-boragimacej:, 
318, Cynoglossum Linn, 
636. Cynoglossum furcatnm Wall. 
Tista Valley up to Lachen, 3-8, 000ft.. No. 808. 
