Leonotis.'] 
LABIATE. 
261 
spine-pointed, the upper much the largest. Corolla arching, twice as 
long as the calyx, deeply bilabiate ; upper lip oblong-spathulate, convex, 
entire ; lower shortly 3-lobed. Stamens 4, included ; anthers all 2- 
celled, the cells divaricating, acute at both ends. Nucules trigonous, 
with a cup-like concavity at the apex. — Herbs, with the flowers in 
very dense distant whorls bracteated by large leaves. Distrib. 
Tropical and South Africa. Species 12. 
1. L. nepetsefolia, B. Br.; Benth. in DC. Prod. xii. 535. An annual 
herb, 3-6 feet high, with finely puberulent square stems. Leaves long-petio- 
led, ovate, membranous, inciso-crenate, 3-4in. long, cuneate at the base 
Flowers 100 or more, in very dense distant whorls 3-4 inches thick. 
Calyx f- 1 in. long, all the teeth pungent. Corolla twice as long as the 
calyx, densely coated with bright scarlet pubescence, the lower lip 
half as long as the upper, the tube with three rings of colourless hairs 
inside below the insertion of the stamens. Bot. Beg. t. 281 ; Wight Ic. 
t. 867. Phlomis nepetsefolia, Linn. Leonotis ovata, Bojer , Sort. 
Maur. 250. 
Mauritius and Seychelles, frequent in waste ground. Now Cosmopolitan in the 
tropics. 
5. LEUCAS, E. Br. 
Calyx-tube long, arching, funnel-shaped, 10-ribbed ; teeth 10 minute 
cusps. Corolla-tube as long as calyx ; limb shortly bilabiate ; upper 
lip entire, lower trifid, the central lobe the longest. Stamens 4, 
didynamous, exserted ; all the anthers 2-celled. Nucules 4, smooth, 
trigonous. — Herbs, with the flowers in a few distant dense whorls, brac- 
teated by large leaves. Distrib. Tropics of the Old World. 
Species 50. 
1. L. aspera, Spreng. ; Benth. in DC. Prod. xii. 532. A much- 
branched annual, \-l foot high, with finely pilose stems. Leaves short- 
petioled, lanceolate or oblong-lanceolate, 1-2 in. long. Flowers 30-40, 
in a few dense globose whorls bracteated by large leaves ; bracteoles 
linear-subulate. Calyx subsessile, J- in. long, finely pilose. Corolla- 
limb white, under i in. long, the concave upper lip clothed with dense 
white hairs, the central lobe of the lower one obovate, retuse, veined 
and rugulose, the side ones very small. Leucas zeylanica, Bojer , Wort. 
Maur. 250. 
Mauritius, in cultivated fields and waste ground. Common in Tropical Asia. 
Madame Tombe. 
A plant gathered by Dr. Balfour in Rodriguez has the habit and foliage of a 
Stachys of the section Stachiotypus, but flowers are wanting in the only specimen. 
Mentha viridis, Linn., the commonly- cultivated mint, is enumerated as an 
introduced species in Dupont’s Mauritian Catalogue. 
