xoTES ON sedum: 57 



in character, forming dense glaucous (not lax glabrous) rosettes 

 closely resembling those of Sempervivum calcareum Jord. and verv^ 

 short flower-stems, and having different petals. It may be defined as 

 follows : — 



Var. DENSIROSULATUM, var. nov. Bosulce densse, duplo latiores 

 quam longiores. Folia quam in typo minora (circa 25 mm. longa, 

 8 mm. lata, 3'5 mm. crassa), spathulata, acuminata, valde glauca, 

 a pice purpurea. Crt2^//s brevior (5-7'5 cm.) a basiramosus. InUores- 

 cetitia congesta, rotundata, 5 cm. longa, 5 cm. lata. Petala rectiora, 

 parte superiore minus incrassata. Sq^iiamoe angustiores. 



In this variet}^ the rosettes are formed of twice at many leaves as 

 in the type (in which, moreover, the breadth of the rosettes is usually 

 no greater than the length). This and the marked glaucescence of 

 the purple- tipped leaves give the plant a veiy distinct appearance. 



Series Cepcea sensu stricto. 



'^ Sedum viscosum, sp. nov. Species sinensis annua vel biennis, 



cauiibus, foliis, bracteis, pedicellis, sepalis, petalis, carpellis pilis 



"T glandulosis viscosis dense obsitis insignis. Etiam foliis planis integris 



obovato-rhomboideis petiolatis, atque floribus longe petiolatis distin- 



guitur. 



Herha annua (vel biennis), mollis, pilosa, viscosissima. Caulis 

 erectus, gracilis, sanguineus, 10-20 cm. altus, ramosissimus, ramis 

 axillaribus adscendentibus, juventute brevissimus, foliis rosulatis 

 obsitus. Folia alterna, plana, internodia a^quantia aut superantia, 

 mollia, carnosa, supra et subtus a^qualiter glanduloso-pilosa, petiolata ; 

 petiolus linearis, 6 mm. longus ; lamina obovato-rhomboidea, obtusa, 

 8 mm. longa, 6 mm. lata, apice puncto parvo purpureo ornata. 

 Flores plurimi, pedicellati, foliis suboppositi, raro axillares, aurei ; 

 pedicelli gracillimi, ad 12 mm. longi. Sepala lanceolata, acuta, dorso 

 glanduloso-pilosa, viridia, carnosa, in calcar non producta, 2*5 mm. 

 longa, 1 mm. lata. Petala lineari-lanceolata, acuta, 5-5*5 mm. 

 longa, 1*5 mm. lata, supra aurea, glabra, subtus glanduloso-pilosa, 

 viridescentia, purpureo -punctata, post anthesin erecta, persistentia. 

 Stamina 10, aurea, 3"5-4 mm. longa. Squamce parvse, late cuneata?, 

 minute emarginatfe, pallide lutese. Carpella gracilia, erecta, oblonga, 

 glanduloso-pilosa, luteoviridia, basi ipso connata, stamina sequantia, 

 stylis gracilibus glabris coronata. 



Seed received from Pere E. E. Maire from Yunnan, its habitat 

 being '* murs humides, ombrages, de Kin-tchong-chan, alt. 2990 m." 

 The plant flowered at Kew, Griasnevin, and in my own garden in 1916 

 and 1917, behaving often as a biennial, but very likely normally 

 annual in duration. In its short life-period, habit, hairiness, stalked 

 flat leaves and long-stalked flowers it agrees with a number of Chinese 

 species — mostly white- flowered — which group themselves round the 

 European S. Cepcea L. Such are S. dnjmarioides Hance, S. jilipes 

 Hemsley, >S'. Silvestrii Pampanini. In man}^ respects S. viscosum 

 resembles the small northern race of the variable S. ch^ymarioides as 

 described by Maximowicz (Bull. Acad. St. Petersbourg xxix. 155), but 

 it differs in its inflorescence not })ifid, flowers more than twice as 



