176 
JOURNAL OF THE ROYAL HORT[CULTURAL SOCIETY. 
Pelargonium tomentosum. 
Phlomis fruticosa. 
Phygelius capensis. 
Pimenta officinalis. 
P. acris. 
Piptanthus nepalensis. 
Pogostemon Patchouly. 
Prostranthera lasianthos. 
Psorala glandulosa. 
Rhopala corcavadensis. 
Rosa rubiginosa. 
Rosmarinus officinalis. 
Ruta graveolens. 
Salvia officinalis. 
Salvia rutilans. 
Santolina incana. 
Skimmia laureola. 
Solanum crispum. 
Tanacetum vulgare. 
Thuja Lobbi. 
T. L. atrovirens. 
T. vervasneana. 
Thymus citriodora aurea. 
T. c. argentea elegantissima. 
T. vulgaris. 
Umbellularia californica. 
Valeriana officinalis. 
OBSERVATIONS ON SOME PLANTS EXHIBITED. 
By the Rev. Prof. G. Henslow, M.A., V.M.H., &c. 
[May 10, 1898.] 
Alpine Plants. —Mr. Henslow took as his subject for 
remarks some Alpine plants exhibited by Mr. Geo. Paul and Mr. 
Ware. He first called attention to the general characters of 
high Alpine and Arctic plants, in that they are dwarf in habit, 
mostly perennials, often with brilliantly coloured flowers, and 
sometimes characterised by a silky or woolly epidermis. These 
features are the result of the climatic conditions; as the same 
plants when grown in lowlands were often annuals, taller, and 
with less bright colours. The proportion of annuals continually 
decreases as the latitude or altitude increases, so that in.Spitz- 
bergen there are none. The dwarf habit has suggested the specific 
names of muscoides , i.e., “ like moss,” nana , i.e., “dwarf,” 
&c. Certain families are especially well represented, as 
Primulacese and GentianeaB, the former of which includes the 
original wild P. auricula, the basis of the. hybrids forming the 
florist’s flowers, of which a dried specimen was exhibited; our 
own P. farinosa and P. scotica, the former closely resembling its 
variety P. /< Magellanica, a specimen of which, brought by Mr. 
Darwin, showed the wide distribution of this species, as the only 
conceivable means of transit from the northern hemisphere was 
