174 KEY TO SUB-CLASSES, ORDERS AND GENERA. 
LXXXV—VERBENACE A—cont. 
finally looping ; branchlefs square ; bark grey, exfoliating in thin papery flakes leaving 
a br ight green inner bark exposed ; (2) (melanophlea ?); leaves orbicular-ovate obtuse 
Ot ae © 23" x 1” — 2”, nerves as in (1), branchlets compressed, bark black smooth; (38) 
(alba 2); leaves lanceolate acute, 24” — 4” x3” — 13, nerves 10 pairs regular ‘sub- 
opposite, obliquely arching and not looping ; Z bianehists compressed, bark brown 
smooth ; and (4) (acuminata *?), differing from the last merely in having finely acuminate 
(sub- caudate) leaves 13” — 33” x 2” — SEua The flowers of the two last are much — 
smaller than the other two, | 
(1) Inflorescence centripetal, the lowest flowers opening first; leaves simple, 
opposite or whorled :— 
(i) Inflorescence of dense spikes of oblique salver-shaped flowers, rarely 
(Lippia, the species here included) in terminal panicles :— 
(1) Spikes capitate, ovoid or cylindric; flowers purple, pink, white, 
yellow, orange, or of these colours mixed ; calyx small ; stamens 4 ; fruit succulent 
or leathery ; leaves aromatic with characteristic odour :— .. .. dcecxx—Lantana. 
(2) Spikes (normally as above, but in the species here included) extended 
into terminal panicles ; flowers very small, whitish, mauve, or lilac ; calyx small ; 
fruit dry, partially dehiscent; leaves (in this species) 3-whorled, scented of 
lemon :— ...  dcecexxi—Lippia. 
(3) Spikes long slender, terminal ; ‘calyx narrowly cylindric, 5-ribbed :— 
(A) Stamens 4 diadelphous ; bracts much shorter than calyx; flowers 
pink-purple :— ... ... decxxii—Bouchea. 
(B) Stamens 2 with 2 staminodes ; “bracts: usually as long as calyx; 
flowers blue, indigo or rosy- -pink : —~ ... dcecxxiii—Stachytarpheta. 
(ii) Inflorescence racemose :— 
(1) Fruit fleshy, a drupe with two 2-seeded pyrenes :— 
(A) Tall trees ; flowers mostly white, small, bracteolate ; corolla sub- 
equally 5-parted; calyx cup- shaped or tubular, persistent and 
surrounding the drupe; stamens 5, sub-eqnal, or 1 shorter, or 
reduced to a staminode:— .. sae decxxviii—Citharexylum. 
(B) Tall shrabs or small trees ; flowers blue or white ; corolla unequally 
5-parted, tube much larger than calyx ; eeamiens 4 didynamous; 
drupe gzolden-coloured :— .  decexxvii—Duranta. 
(2) Fruit a capsule, enveloped in the calyx and covered by its bent- 
down teeth, 2-cells, each cell with 1 large seed ; climbers ; flowers violet, sub- 
tended by a 3-leaved blue persistent epicalyx; corolla tube short, cylindric, 
limb spreading with 5 roundish lobes; stamens 4; ovary on a eub- -cy lindric 
gynophore :— dcecxxxiii— Petra. 
({1) Inflorescence centrifugal, cymose : — 
(i) Cymes lax, panioulate ; mostly trees and shrubs :— 
(1) Fruit indehiscent, containing ]—4 pyrenes. 
(A) Corolla regular ; stamens isomervus, equal; leaves simple :— 
(a) Calyx small, unaltezed in fruit; corolla purple or red, tubular 
with 4. sub- -quadrate oblong ‘patent lobes; drupe very small 
with four 1-seeded pyrenes :— .. ... decxxiv—Callicarpa. 
(b) Calyx accrescent in, and enclosing, the fruit ; corolla white, with 
short tube and a 5—6-equally-lobed spreading limb ; drupe 
large with one 4-celled pyrene :-— ead deexxy—Tectona, 
(B) Corolla 2- -lipped ; stamers 4 didynamous :— 
(a) Drupe with one 4-celled pyrene :— 
(x) Leaves simple, entire or toothed :— 
(*) Flowers large, yellow or brownish, with sub- “Sonepat 
tube :— : ... dcecxxix—Gmelina. 
(**) Flowers small, white, “greenish, yellowish, or purplish, 
somewhat salved-shaped with slender tube :—decxxvi—Premna. 
(8) Leaves digitate ; flowers small, white, mauve, or bluish :— 
dceexxx—Vitex, 
(b) Drupe with four 1-celled pyrenes; leaves simple; stamens 4, 
long exserted :— 
(x) Calyx campanulate, tubular, or suburceolate, truncate “to 
deeply 5-fid, often accrescent or coloured {crimson) ; 
flowers mostly white, sometimes blue, pink, or purple :— 
dccxxxi—Clerodendron. 
wa 
Pee 
