KEY TO SUB-CLASSES, ORDERS AND GENXRA, 175 
LXXXV—VERBENACEAi—cont. 
(B) Calyx rotate aud widely patent, entire or obscurely 5— 
lobed, scarlet in fruit ; flowers orange or scarlet or brick- 
red :— ... .»- dccxxxii—Holmskioldia. 
(2) Fruit dehiscent, a capsule with 4 concave valves and incurved margins 
holding the seeds ; leaves simple, minutely punctate with yellow glistening 
glands; corolla with short mint tube and spreading limb of 4 white and 
1 blue lobes :— ; ‘as s .. decxxxiv—Cary opteris 
(ii) Cymes densely capitate : — 
(1) Cymes 3—9-flowered ; bracts of flower head large, forming an 
involucre fruit small, nearly dry ; large climbers :— 
(A) Bracts 6, white :— 
(a) Calyx 8—8-toothed ; corolla lobes 6--16, w ibe: ; stamens 6--16, 
much exserted:— deexxxv--Symphorema. 
(b) Calyx 5-toothed ; corolla lobes 5 5 (rarely 6), white ; stamens 5, 
little, or not, exserted:— ., ah decxxxvi—Sphnodesma. 
(B) Bracts 3—4, white or blue ; corolla distincty 2-lipped, white :— 
decxxxvii— Congea. 
(2) Cymes many-flowered, densely capitate; flowers yellow; bracts 
shorter than the calyx; calyx 5-partite with much imbricated concave segments ; 
fruit rather fleshy, partially dehiscent ; small trees of the mangrose swamps :— 
decxxxviii— Avicennia. 
LXXXVI—-LABIAT A— 
(I) Stamens declinaie, 4 perfect, anther ceils at length explanate, conflu- 
ent :— 
(i) Corolla 2-lipped, upper 4-lobed, lower hardly longer than upper,some- 
what declinate, nearly flat ; calyx upper lobe always widest, large, ovate, recury- 
ed, margins decurrent on tube, other lobe narrow subulate, whole calyx deflex- 
edin fruit; stigma 2-fid; flowers white or pale-yellow, in spiked or racemed 
whorls of 6—10 flowers :— .. decxxxix - Ocimum. 
(ii) Corolla 2-lipped, npper very ‘short obtusely 34. toothed, lower much 
elongated and boat-shaped : 
(1) Calyx equally 5-toothed or obscurély 2-lipped with upper lip 3-toothed 
and lower 2-toothed, or with upper lobe large rounded and reflexed and the 
others narrow snbulate, filaments free ; flowers blue, laxly panicled :— 
decxl—Plectranthus. 
(2) Calyx very oblique, distinctly 2-lipped with the upper lobe large 
entire inflexed and closing the calyx mouth, lower lip truncate or ovscurely 
toothed ; filaments free; flowers small in dense oblong, 4-gonal or cylindric, 
spikes. simple or panicled,!purple or blue; ... Mi deexli—A nisochilns 
(iii) Corolla 2-lipped, upper 2-fid lower 3- fid, lobes all flat spreading ; calyx 
lobes subequal, tube 138-—15-nerved ; stamens included ; flowers bluish-grey, 
in interruptedly spiked whorls of 6—10 flowers :-— ... ... decxlii-- Lavandula. 
(If) Stamens erect, spreading, or ascending, not declinate : — 
(i) Stamens 4, perfect :—— 
(1) Corolla not 2-lipped, but lobes 4 subequal and similar or lowest 
lebe slightly different ; anthers 1-celled, cells short; calyx 5-nerved, teeth equal :— 
(A) Stamens exserted, filaments bearded or naked; calyx 5-toothed ; 
corolla lower lobe subpatent ; flowers white, pink or purple, 
whorled in glomerate, panicled or solitary interrupted spikes :— 
decxlii—Pogostemon, 
{B) Stamens not (or scarcely) exserted, filaments naked ; calyx 5-partite, 
segments plumose in flower and pappose in fruit ;flowers 
white, whorled in slender cylindric spikes: — decxliv—Colebrookia. 
(2) Corolla 2-lipped, upper lip erect, lower spreading and 3-fid; stamens 
4, didynamous :— 
(A) Corolla upper lip short nearly flat, not woolly ; stamens exgerted ; 
calyx subequally 5-toothed :— 
(a) Flowers purple io axillary whorls or lax flowered panicled cymes ; 
nutlets smooth not winged :— nis decxlviii-- Anisomeles 
(b) Flowers orange or scarlet in axillary whorls or lax flowered spikes 
or racemes; nutlets winged above;:-— ... decxlix (bis,) —Colquhounia 
