Tas. 4875. 
RHODODENDRON Kevyst. 
Mr. Keys’ Rhododendron. 
Nat. Ord. Ertcacrk®.—Dercanpria MonoGynia. 
Gen. Char. (Vide supra, Tas. 4336.) 
Subgen. Krysta, Nutt. Corolla tubuloso-cylindracea, limbi lobis erecto-conni- 
ventibus, racemis brevibus e ramis vetustis lateralibus. Nutt. 
Ruopopenpron (f Keysia) Keysii; ramis ferrugineis resinoso-punctatis, foliis 
petiolatis elliptico-lanceolatis acutissimis mucronatis glabris, subtus pallidis 
utrinque (subtus precipue) resinoso-punctatis, racemis aggregatis laterali- 
bus ad basin ramulorum novellorum, calyce minuto e dentibus 5 acutis 
eequalibus erectis, corolla tubulosa(!), limbi lobis 5 erectis ovatis obtusis, 
staminibus 10, filamentis corolla tubum equantibus inferne hirsutis, ovario 
ovato resinoso-punctato, stylo corolla breviore inferne hirsuto, stigmate vix 
dilatato minute 5-lobo. 
RHODODENDRON Keysii. Nutt. in Hook. Journ. of Bot. v. 5. p. 353. 
This very remarkable Rhododendron is one of several new 
species of the genus that rewarded the researches of Mr. Booth 
in the mountains of Bootan,* and has been communicated to us 
by his relative, Mr. Nuttall, from the garden at Mosley Hill, 
Aigburth, Liverpool, the residence of Adam Fairrie, Esq. (Mr. 
P. Williams, gardener), with the name, 2. Keysi. The remark- 
able form of the corolla in this species, so unlike that of any in - 
the genus, could not however escape the notice of so acute an 
observer as Mr. Nuttall; and he suggested that it should consti- 
tute a subgenus, under the name of Keysva, characterized by 
the cylindrical corolla having a nearly equal five-lobed connivent 
border. This name we have adopted. Mr. Nuttall further ob- 
serves, that it bears its flowers in short axillary racemes coming 
out of the old wood; and that in this respect, as in the shape of 
* At an clevation of 9,000 to 10,000 feet above the sea-level; on the summit 
and northern ridges of the Lablung, forming low thickets, among Gaultherias 
and stunted Yews, above the ranges of R. Hookeri and R. Falconeri, and amid 
snows two and three feet deep. 
OCTOBER Ist, 1855. 
