308 THE LADIES' FLOWER-GARDEN 
OTHER SPECIES OF PENTSTEMON. 
P. MACKAYANUS, Flor. Cab., vol. II., t. 117. 
This is a very pretty species, which is said to be a native of Ohio, where it was discovered by Mr. Drum- 
mond in 1834. It is a very small and delicate plant, with purple flowers, which are white inside, and have 
the beard of the sterile filament of a bright yellow. It is quite hatdy, and is easily increased by dividing 
the roots. 
P. CRASSIFOLIUS, Lindl., Bot. Reg. for 1838, t. 16. 
This is a very handsome species, with a suffruticose stem, and fleshy leaves. It grows about a foot high, 
and requires.the same treatment as P. Scouleri. It is remarkable for the great number of shoots sent up by the 
roots, and consequently it is very easily propagated. It is a native of California, and it was introduced 
about 1835. 
P. BREVIFLORUS, Lindl., Bot. Reg., t. 1946. 
This is a curious little plant, with small flowers, which are white ; striped with pink, and tinted with 
yellow, so as to present a very singular and harlequin-like appearance. It was introduced from California by 
Douglas, in 1833 ; but it is so difficult to manage that it is very seldom seen in British gardens, and is now 
probably lost. 
There are some species of Pentstemons mentioned in catalogues, but very little is known respecting them. 
GENUS VI. 
CHELONE, Lin. THE CHELONE. 
Lin. Syst. DIDYNAMIA ANGIOSPERMIA. 
Generic Cuaractsr. — Calyx five-parted, tribracteate ; corolla tin- . rest; anthers woolly; capsule two-celled, two-valved ; seeds sur- 
gent, venlricose ; upper lip emarginate ; lower one trifid, sterile ; sta- j rounded by a membranous margin (G. Don). 
mens didynamoue, with a sterile filament, which is shorter than the 1 
Description, &c. — Chelone is very nearly allied to Pentstemon ; and, in fact, many botanical writers seem 
to have great difficulty in distinguishing between these two genera. Some authors make the difierence consist 
in Chelone having woolly anthers, and Pentstemon smooth ones ; while others distinguish the genera by the 
form of the flower ; Chelone having a short inflated corolla, which is contracted at the orifice , while in 
Pentstemon the corolla is funnel-shaped or tubular, with an open mouth. The seeds of Chelone are also 
winged, that is, surrounded by a thin membrane ; while those of Pentstemon are perfectly smooth. Without 
troubling my readers, however, with these minute distinctions, I need only tell them that modern botanists place 
but four species in the genus Chelone, and that these four are : — C glabra, C. obliqua, C. nen,orosa, and 
C. Lyoni ; the last being sometimes called C. major. All these species are easily distinguished at first sight 
from the Pentstemons, from the manner in which the flowers are crowded together in a close spike ; and from 
the shape of the flowers themselves, each being short and thick, with the upper lip curved, so as to bear some 
resemblance to the arched back of a tortoise ; whence, indeed, the genus takes its name, the word Chelone being 
the scientific name of the tortoise. 
