Refugium Botanic luii.] 
[March, 1871. 
TAB. 256. 
Natural Order LABiATiE. 
Tribe Ocimoide^. 
Genus Plectranthus, L'Herit. 
Section Coleoides, Benth. 
P. COLEOIDES {Benth. in D. C. Prodr. xii. 64). Caulibus erectis dense 
griseo-pubescentibus, foliis petiolatis late cordato-ovatis subacutis 
iuciso-crenatis pallide viridibus crassiusculis precipue infra griseo- 
puberulis, floribus in paniculis thyrsoideis elongatis ramis striate 
erecto-patentibus ultimis racemosis dispositis, bracteis deltoideis 
acuminatis floribus expansis deciduis, calycis fructiferi dente supremo 
ovato concave, dentibus reliquis lanceolatis, coroUis calyce quadruple 
longioribus, tube ad medium defracto, ore dilatato, labio superiore 
erecto bifido lobis rotundatis, inferiore magno integro cucullato. 
Coleus Colvillel, Hart. 
A native of the lower levels of the Neilgherries, tropical region; 
gathered by Hohenacker, G. Thomson, &c. 
Stems twelve to eighteen inches high, branched in the lower 
part, clothed upwards with dense gray pubescence. Petioles 
fleshy, erecto-patent, an inch to two inches long. Leaves broadl}^ 
cordate -ovate, two to four inches long, an inch and a half to 
three inches broad, subacute, inciso-crenate, rather fleshy in 
texture, pale green above with inconspicuous adpressed short 
hairs, tinged with purple beneath with much more pubescence of 
the same kind. Floivers in a copious thyrsoid panicle ultimately 
a foot long, with rigidly erecto-patent branches. Bracts ovate- 
acuminate, falling when the racemes expand. Pedicels erecto- 
patent, a line long. Calyx pubescent, in the flowering stage a 
line long, in the fruiting stage two lines ; the tube campanulate ; 
the large upper tooth oblong, concave, the three lower ones 
lanceolate. Corolla pale lilac, four times the length of the calyx; 
the tube deflexed in the middle, above this much dilated to the 
throat ; the short upper lip erect, with two rounded lobes, the 
lower one much larger, boat- shaped, including the four stamens. 
Tab. 256. — 1, flower viewed in front; 2, flower viewed from side; 
3, coroUa cut open to show the stamens ; 4, two views of anther ; 5, nuts : 
all magnified. — J. G. B. 
