1916-17.] BOTANICAL SOCIETY OF EDINBURGH 113 



very similar, but smaller, ovate-oblong with a long, broadly 

 linear petiole equalling the lamina, widening below to a 

 very broad, deltoid-semiorbicular base ; the axillary flower- 

 ing-stems, flowers, and general appearance much resemble 

 those of S. Praegerianum. 



Next, several species have affinities with S. priinidoides 

 — viz. S. jpachy dados ^ S. Leveilleanurti,^ and S. leuco- 

 carpum.^ The habitats of these lie far apart — Afghanistan, 

 Quelpaert, and Yunnan respectively. S. pachyclados (of 

 which there are specimens at Kew) reproduces closely the 

 growth-form of S. primuloides, the caudex being aerial 

 and much-branched. The leaves (fig. 16), which are borne 

 in terminal rosettes, are small, obovate, bluntly toothed, 

 and the very short petiole expands into the characteristic 

 clasping base (though not referred to in the description). 

 The flowers are smaller, more open, and more numerous 

 than in S. primuloides. Of the remaining two species the 

 descriptions are not sufficiently full for our purpose ; but 

 S. Leveilleanum has a thick erect caudex with dense rosettes 

 of sessile entire cuspidate cuneiform-linear leaves \ inch 

 in length, and short leafy (? axillary) flower-stems. As 

 regards aS'. leucocarpum, the details given do not allow of 

 a complete reconstruction of the plant, but apparently it 

 belongs here also. 



Two other species, S. Kaiyelesae, R. Hamet "* from Tibet 

 and *S^. Levii, R. Haraet ^ from Sikkim, appear to connect 

 the Praegerianwm-primuloides series with the crassipes 

 type (in which the scales, at first often green and often 

 terminated by a short narrow lamina, become later mem- 

 branous and triangular or semicircular). These two species 

 have thick (? elongate) caudices and axillary flower-stems. 

 The inner younger scale-leaves are green and are expanded 

 into an ovate entire stalked lamina (figs. 17, 18); when the 

 lamina fades, the expanded base remains as a membranous 

 scale of crassipes type. This shape of caudex-leaf is well 

 matched by those of young plants of >S^. Farreri, W. W. Sm.^ 



1 Aitchison and Hemsley, Journ. Linn. Soc. (Bot.), xviii, 58, 1880. 

 - R. Hamet in Bull. Soc. Bot. France, Iv, 712, 1909. 

 . 3 Franchet in Jonrn. de' Bot., x, 288, 1896. 

 * Bull. Soc. Bot. France, Iviii, 615, 1911. 



5 Ibid., Ivi, 568, 1909. 



6 Notes Roy. Bot. Gard. Edin., ix, 125, 1916. 



