Plectranthus. | LABIATA (Cooke). 267 
decurved ; throat equal or obliquely swollen ; upper lip usually short, 
broad, 3—4-fid ; lower lip usually much longer than the upper, 
entire, boat-shaped. Stamens 4, didynamous, declinate ; filaments 
simple, free ; anther-cells usually confluent. Disk usually produced 
into a gland in front which is sometimes longer than the 4-partite 
ovary. Style subequally 2-fid. Fruit of 4 orbicular ovoid or oblong 
smooth granulate or punctate nutlets. 
Annual or perennial herbs or undershrubs ; flowers usually small in lax (rarely 
close) paniculate or racemose cymes ; bracts usually small, foliaceous, 
Distris. Species about 250, widely distributed through Africa, India, China, 
Japan, the Malay Archipelago, Australia and Polynesia. 7’. C. 
A. ISODON. Calyx-teeth subequal or united into 2 lips ; upper lip 3-toothed ; 
cymes laxly many-flowered with a common peduncle (rarely contracted into 
dense verticils). 
Leaves less than 2 in. long, sub-fleshy, cuneate at 
the base... ait ee cas ick ... (1) spicatus. 
Leaves exceeding 2 in. long : 
Leaves subsessile, opposite or ternately verticillate, 
ovate-lanceolate sas Lag nes one 
Leaves with petioles reaching 2 in. long, broadly 
ovate with truncate base a saa nee 
(2) calycinus, 
(3) myrianthus, 
B. GERMANEA. Calyx 2-lipped for } of its length ; upper lip ovate, seldom 
resembling the teeth of the lower lip, but if so, broader and more distant ; 
lower lips with narrow acuminate or subulate teeth. 
Section 1. Eu-Grermanea. Ripe calyx declinate ; upper lip ovate ; lower 
lip with lanceolate-subulate teeth, 2 lowermost connate at the base ; 
corolla-tube saccate or spurred at the base behind. 
Corolla-tube spurred at the base behind : 
A shrub ,; “rt: ay ed sop 
Herbs : 
Upper tooth of calyx broadly ovate, sub- 
obtuse, as broad as long; pedicel 
exceeding 2 lin. long ... ere ... (5) petiolaris. 
Upper tooth of calyx ovate-lanceolate ; 
pedicels 1 lin. long .- «ss +=(6) arthropodus. 
Corolla-tube not spurred at the base behind: 
Suffruticose : : 
Leafless at flowering time; leaves 2-3 in. 
long, rounded or subcordate at the base ; 
inflorescence a leafless panicle 12-18 in, 
long =. As Rox oe : 
Leafy at flowering time ; leaves less than 
2 in. long, truncate or cuneate at the 
base ; inflorescence asimple lax raceme (8) saccatus, 
Herbaceous : 
Stem puberulous; verticils of 2 shortly 
pedunculate 3-5-flowered, opposite, 
branched cymes mae vas ... (9) Rehmannii. 
Stem pubescent with articulate glandu- 
liferous hairs; verticils 6-8-flowered, 
not pedunculate ad ie ... (10) Krookii. 
Stem villous; verticils 6-flowered, not or 
scarcely pedunculate ... ane ... C11) ciliatus. 
(4) fruticosus. 
(7) floribundus. 
