72 PRAEGER—SoOME ASIATIC SEDUMS. 
(2) A-tun-tsu : screes, 16,000 feet. Flowers yellow, cushion. 
6.8.13. F. Kingdon Ward, No. 962. 
Sedum Barnesianum, Praeger, sp. nov. (Plate clxxi, 1). 
Sectionis Rhodiolae species humilis e serie Primuloides Prae- 
ger, quae grex caudicis foliis bene evolutis distinguitur. Sede 
Levit, R. Hamet est proxima, sed caudicis squamis longe del: 
toideis nullis, caudicis foliorum lamina lineari-rhomboidea (nec 
ovata), ramis floriferis horizontalibus (nec erectis), foliis ram- 
orum floriferorum linearibus (nec ovato-oblongis), sepalis 
caudato-acuminatis (nec acutis), petalis caudatis (nec obtusis), 
squamis nectariferis quadratis (nec duplo latioribus quam longi- 
oribus) distinguitur. 
Herba perennis, glabra, ramis sterilibus nullis. Caudex 
erectus, simplex, brevis, crassus, I-2 cm. longus, ad 1 cm. latus, 
foliis ramisque floriferis et emarcidis et vivis coronatus. 
Caudicis foliorum emarcidorum laminae dilapsae, petioli persist- 
entes, erecti, lineares, plani, truncati, nigrescentes, annulum 
densum circum gemmulam formantes. Caudicis folia viva 
pauca (4-8), erecta, petiolata, integra; petiolus linearis, planus, 
9 mm. longus, .75 mm. latus, basi paulum dilatatus; lamina lin- 
eari-oblanceolata vel lineari-rhomboidea, acutiuscula, 6 mm. 
longa, 1.5 mm. lata. Rami floriferi pauci (2-6), simplices, grac- 
iles, 2.5 cm. longi; parte inferiore nudi, erecti, parte superiore 
foliosi, horizontales, apicibus adscendentibus. Rami floriferi 
vetusti subpersistentes, adscendentes. Ramorum floriferorum 
folia conferta, sessilia, integra, plana, lineari-rhomboidea, sub- 
acuta, 4-5 mm. longa, 1 mm. lata, apice et basi angustata. 
Flores solitarii, hermaphroditi, 5-meri, campanulati, albi vel al- 
bidi. Sepala libera, ovato-oblonga, caudato-acuminata, viridia, 
3mm. longa, 1.5 mm. lata. Petala libera, suberecta, ovata, apice 
caudata, 4.5 mm. longa, 2 mm. lata. Stamina 10; episepala 3 
mm. longa; epipetala 2.5 mm. longa, triente adnata. Squamae 
_nectariferae quadratae, .75 mm. longae et latae, apice subretusae. 
Carpella erecta, gracilia, rubescentia, in stylos breves attenuata, 
2.5-3 mm. longa. : 
(x) Himalaya : Kalaeree, East Himalaya, 16,000 feet. 12.9.12. 
Coll. Rohmoo Lepcha, No. 434. 
(2) Phari, Chumbi Valley, East Himalaya. 14,000 feet. 
20.9.16.. Coll. Native Collector. 
This little plant is an addition to the interesting group of 
ums of which S. primuloides, Franch. and S. Praegerianum 
W. W. Sm. are examples, and which, as I have endeavoured to 
show,* belongs to the section Rhodiola and consists of primitive 
* Praeger (R. L1.), Trans. Bot. Soc. Edinb. xxvii, 107. : 
