1914-15.] BOTANICAL SOCIETY OF EDINBURGH 329 



larger, the petioles are coarser, the corolla three times 

 larger, and there are other differences. 



I take this to be a plant growing in an environment 

 such as would be furnished in a limestone grotto. 



Again, in the plant which has been described as 



P. VilTrwrinia/na, Petitm. 1 (Plate XLVI) 



we have another large-leaved form of P. obconica, Hance, 



with relatively short inflorescences. It is characterised 

 by its densely hairy covering. It has stout scapes which 

 are much longer than the petioles, and the flowers have 

 short pedicels. The nervation of the leaves on the under 

 side is conspicuous, recalling the condition observed in 

 P. malvacea, Franch.. and its allies. Dry soil is given as 

 the habitat of one of the set of specimens I have seen. 



I give these names and descriptions attached to forms 

 of P. obconica, Hance. without confidence that they really 

 mark definite microforms. Until more information comes, 

 they may be taken to represent, the one a less hairy the 

 other a more hairy state of the large-leaved short-scaped 

 series of forms within the type. 



I pass now to consideration of that most interesting and 

 prospectively valuable microform which has been already 

 ref erred to as 



1 P. Vilmoriniana, Petitm.. in BulL Herb. Boiss.. ser. 2. viij (1908), 

 365. 



•• M Hirer pubescens. Folia petinlata, petiolum 3-7 cm. longiun, 

 limbo 8-11 cm. longa. 4-7 cm. lata, late oblongo vel subrotundo-ovata, 

 basi cordata, membranacea, lobulata, obscure dentata. Petiolus laminam 

 subaequans. ScapTis (2-3) 15-25 cm. altus. folia longe superans, 

 umbellam simplicem multifloram (21 fl.) gerens. Bracteae parvae 

 4-5 mm. longae, lanceolatae pedicellis multo breviores : calyx parvus 

 (3 mm.), campanulatus, dense hirsutus, breviter et acute 5 dentatus, 

 post anthesin leviter accreseens (5 mm.). Corollae parvae, roseae, 

 mm. longae, calycem duplo superantes ; limbus planus 5-6 mm. 

 diam., lobi obcordati. Capsula globosa, calyce inclusa. 



"Yunnan: Pe-yen-t?in. Prefecture of Tali. Coll. Jean Py. 19, iv. 

 1906 : Ducloux. Xo. 45SS. In Herb. Paris. Flowers, violet. Drys 



Y :man : Pa-la-ouan. Region of high Pinch wan. Coll. Jean Pv. 3. 

 v, 1911 : Ducloux, No. 6950." In HcrbT Paris. 



li Is distinguished from P. obconica, Hance, of which it has the aspect, 

 by its very large leaves strongly nerved and with the nerves very 

 apparent on the under surface, by its very small flowers (5-6 mm. 

 diam.) in a simple umbel very dense, with rigid pedicels which are 

 velvet-hairy, as well as the calyx which is scarcely accrescent.''" 



