Avicennia.] 
YERBENACEA1. 
257 
fleshy embryo germinating before it falls. — Evergreen trees, with wide- 
creeping roots, small entire coriaceous leaves and minute flowers in 
terminal and axillary globose heads. Distrib. Shores of the Tropical 
zone. Species 4. 
1. A. officinalis, Linn. ; Schauer in LG. Prod. xi. 700. Branchlets 
and leaves below clothed with whitish tomentum. Leaves opposite, 
short-petioled, oblong-lanceolate, narrowed to both ends, 2-4 in. long, 
entire, coriaceous, green and glabrous on the upper surface. Flowers 
in small round peduncled heads from the end of the branch, and 
axils of the upper leaves. Calyx % in. long ; lobes round, coriaceous, 
densely downy downwards. Corolla-tube as long as the calyx ; round 
lobes silky on the outside. Fruit downy, the size of a small plum. 
Seychelles, in the Mangrove swamps of Mahe and Praslin. Tropical shores 
of the Old World. 
Order LXXVIII. LABIAT7E. 
Flowers irregular, hermaphrodite. Calyx inferior, persistent, with 
5 mostly unequal teeth. Corolla deciduous, bilabiate. Stamens in- 
serted in the corolla tube, usually 4, in two equal pairs ; anthers 2- 
celled, dehiscing longitudinally. Ovary 4-lobed ; style filiform, curved 
forked at the end ; ovules solitary, erect, anatropous. Fruit of four small 
dry 1-seeded nucules. Seed usually exalbuminous ; radicle inferior. — 
Herbs or shrubs, with opposite leaves and whorled flowers, either 
aggregated into racemes or spaced and bracteated with large leaves. 
Distrib. Mostly warm-temperate regions. Species 2500. 
Stamens curved downwards. 
Lower lobe of corolla flat. 
Upper tooth of calyx decurrent down the tube ... * Ocymum. 
Upper tooth of calyx not decurrent * Moschosma. 
Lower lobe of corolla oblong- spathulate, convex ... 1 . Plectranthus. 
Lower lobe of corolla short, deeply saccate . ... * Hyptis. 
Stamens curved upwards. 
Calyx-teeth 3. Stamens 2, with anthers 1- celled. . . * Salvia. 
Calyx-teeth 5, deltoid, not spiny. 
N ucules with a lacunose crest at the top .... 2. Achyrospermum. 
Nucules naked at the top 3. Anisomeles. 
Calyx-teeth 5, subulate, spiny * Leonurus. 
Calyx-teeth 10. 
Corolla deeply bilabiate 4. Leonotis. 
Corolla shallowly bilabiate 5. Leucas. 
* OCYMUM, Linn. 
Calyx-tube short ; upper tooth much the largest, with decurrent 
edges. Corolla with a short tube and two subequal lips, the upper 
4-toothed, the lower declinate, nearly flat. Stamens 4, the two 
lower the longest ; filaments often with a tooth or tuft of hairs at the 
base ; anthers reniform- Style shortly bifid. Nucules globose, smooth or 
dotted. — Herbs or shrubs, with small flowers in long narrow racemes, 
bracteated by minute leaves. Distrib. Bound the world in the tropics, 
some species much cultivated. Species 40. 
s 
