BALFOUR—NEW SPECIES OF PRIMULA. 13 
a limited number of specimens from one collecting, and that 
P. flava, Maxim. also is described from one collecting by Prze- 
walski on the Upper Hoangho in Kansu. Further knowledge 
may modify the view I have expressed. 
A remarkable feature seen on Purdom’s specimens is a coarse 
warting over the surface of the lamina. Mr. M. Y. Orr, Assistant 
in the Laboratory of the Royal Botanic Garden, has been so 
good as to examine these warts for me, and reports :— 
‘‘ (a) The pustules are groups of enlarged and malformed 
cells of the upper epidermis of the leaf. 
“« (b) Each cell of a group is full of bacteria—a bacillus sp.— 
the original living contents of these cells having 
disappeared. 
‘These pustules appear to be ‘ bacterial galls,’ 
but the condition of the specimen makes it almost 
impossible to say whether the bacillus is the cause of 
the malformation, or whether it is merely following 
in the wake of some other causative disease.” 
\ Wyn Primula compsantha, Balf. fil. et Forrest. 
Epilosa rhizomate brevi foliorum praeteritorum vestigiis 
vestito. Folia membranacea sub anthesi parva ad 5 cm. longa 
ad 1cm. lata oblongo-spathulata obtusa crenato-dentata deor- 
sum integra et in petiolum alatum alis membranaceis senism 
attenuata supra viridia subtus luteo-farinosa venis primariis e 
costa media prominula regulariter pinnatim orientibus. Scapus 
ad g cm. longus tenuis ad apicem sparse farinosus umbellam 
parvam 2-4-floram gerens ; bracteae paucae ad 6 mm. longae 
curvatim adscendentes sparsim farinosae a basi vaginata auri- 
culata acuminatae sine hydathodo conspicuo terminali margine 
minutissime ciliatae ; pedicelli erecti bracteis plerumque long- 
iores saepe aequilongi vel eis breviores sparsim farinosi ; antho- 
podium parvum. Calyx poculiformis in flore brevistylo 6 mm. in 
flore longistylo 8 mm. longus costis viridibus intervallis sub- 
membranaceis luteo-farinosis vittatus ultra medium fissus 
lobis ligulatis obtusis. Corollae tubus subinfundibuliformis 
floris brevistyli 1.2 cm. longistyli I cm. longus membran- 
aceus pallide flavus intus sparsim ad orem dense puberulus 
exannulatus supra stamina paullo ampliatus infra stamina 
vix rugosus, limbi patuli discus 2 mm. latus, lobi rosei (Forrest) 
8 mm. longi oblongi emarginati. Stamina fere sessilia floris 
brevistyli supra medium tubi corollini inserta antherarum 
apicibus circ. 2 mm. ab ore remotis, floris longistyli basin versus 
inserta antheris calyce multo brevioribus. Ovarium ovoideum ; 
stylus longus tubum corollae aequans, brevis calyce brevior ; 
stigma discoideum depressum sublobulatum. 
