Scrophularinee—Pentstemon. 345 
a very ornamental somewhat shrubby plant with shortly 
petiolate ovate-cordate slightly toothed glabrescent leaves and 
narrow tubular bilabiate orange-scarlet flowers in leafy pani- 
cles. 
10. P. Murraydnus.—This species is remarkable for its 
ample glaucous perfoliate leaves and tubular nearly regular 
scarlet and yellow flowers in foliaceous racemes. Mexico. 
ll. P. Jaffrayanus.—aA splendid hardy species with glau- 
cous entire leaves and bright blue and red flowers in narrow 
leafless panicles. California. 
12. P. Digitalis—A very distinct tall-growing hardy 
species with glabrous sessile stem-clasping lanceolate serrate 
leaves and branched panicles of white viscous flowers. Corolla 
bilabiate, inflated, curved, and suddenly constricted into a 
narrow tube towards the base. Southern States of North 
America. 
Chenéstoma fastigiatum is a dwarf South African annual 
with opposite toothed leaves and spikes of rosy purple flowers. 
The corolla is very much inflated, and includes the didynamous 
stamens. 
Nycterina Capénsis, also from South Africa, is an annual 
with white fragrant flowers, opening towards night. The calyx 
is 2-lipped, and the corolla tubular, and the flowers sessile 
in terminal spikes. 
15. MIMULUS. 
Prostrate or erect annual or perennial herbs with opposite 
leaves and solitary axillary flowers. Calyx tubular, angled. 
Corolla bilabiate; upper lip erect or reflexed, bilobate; lower 
lip trilobate; anthers confluent. Capsule 2-celled, many- 
seeded. There are about thirty species, from North and South 
America and Australasia. The name is from piped, an ape, in 
allusion to the form of the flower. 
1. M. liteus. Monkey Flower.—Stems ascending, stout, 
hollow, glabrous or glandular. Leaves ovate or oblong, 5- or 
more nerved, coarsely toothed. Flowers yellow with two crim- 
gon or purple spots on the lower limb. This species is a native 
of Chili and California, and produces its attractive flowers all 
the Summer. It is now frequently seen in waste places, by 
river-sides, etc., in this country, and is spreading very fast in 
some localities. 
M. variegitus, syn. M. rivularis (fig. 191), and M. guttatus, 
