XCII. ACANTHACER. 287 
21. RUTTYA, Harv. 
Calyx 5-parted; segments linear-attenuate, very long. 
Corolla 2-labiate, the upper lip erect, semi-2-fid, flat, lower 
defiexed, equally 3-parted ; tube wide, shorter than the calyx, 
on one side inflated. Stamens in the throat, exserted, fertile 
2, with 1-celled, oblique anthers, mucronate at base ; sterile, 
tooth-like, very short. Ovary sessile, 2-celled, cells 2-ovuled ; 
style slender, pubescent; stigma 2-fid. Capsule clavate, 
barren at base, 4-seeded above.—DC. Prod. xi. p. 809; Thes. 
Cap. t. 144. 
A Natal shrub, 8-10 feet high, with ovate-acuminate leaves, and very 
dense, terminal, ovate-oblong or cylindrical spikes of bright red flowers. 
Bracts subulate. 
22. ASYSTASIA, Blume. 
Calyx 5-parted, equal. Corolla funnel-shaped ; limb 5-fid, 
subequal, the upper lip rather concave. Stamens 4, didyna- 
mous, included, connate in pairs at base ; anthers 2-celled, the 
cells parallel, callous or appendiculate at base. Stigma capi- 
tate, 2-lobed. Capsules compressed and barren at base, 4- 
seeded above.—DC. Prod. xi. p. 163. 
A. Gangetica, T. Anders., a common African and Asiatic species, occurs 
at Natal. Branches diffuse, slender; leaves cordate-ovate or roundish, 
small; racemes axillary and terminal, secund ; bracts small. 
23. MACKAYA, Harv. 
Calyx small, nude, equally 5-parted, the lobes subulate. 
Corolla with a cylindrical tube, bell-shaped, the limb veiny, 
subequal, erect. Stamens in the throat of the tube; 2 fer- 
tile, with sagittate, 2-celled, equal-sided anthers; 2 sterile 
filiform, without anthers. Style filiform; stigma minute, 2- 
fid. Ovary 2-celled ; cells 2-ovuled in the middle. Capsule 
clavate, with a compressed, barren base, 4-seeded above.— 
Thes. Cap. t. 13. 
M. bella, Harv., is a graceful shrub, the leaves petioled, ovate-oblong, 
repand, minutely dotted above, glabrous; the flowers in terminal, slender, 
secund racemes. Flowers large and handsome, 2 inches long, pale lilac, 
pendulous. 
Orver XCIII. VERBENACEA. 
Calyx tubular, 5-fid or 5-parted, rarely 2-parted, persistent. 
Corolla tubular, deciduous, with an irregular, more or less 
labiate, rarely subregular limb. Stamens 4, didynamous, or 
nearly equal, sometimes with a rudimentary fifth stamen. 
Ovary free, 2—4-celled ; style 1, terminal ; ovules mostly soli- 
