170 KEY TO SUB-CLASSES, ORDERS AND GENERA. 
LXXXI-—SCROPHULARIACEA— 
(1) Leaves all alternate ; corolla salver-shaped with long tube slightly 
dilated at top, limb flat, 5-cleft with rounded lobes; flowers white or blue ; 
stamens 4, anthers confluent at tips ; style bent inwards at top where divided 
into 2 stigmatic lobes ; capsule Jeathery or fleshy ; seeds many, yxather large, 
imbedded in pulp:— ... Ys Lee 2 as ie dclxxiv— Brunfelsia. 
(II) Leaves, at least the !ower, opposite or whorled ; fruit a capsule :— 
(i) Corolla distinctly bilabiate :— 
(1) Corolla with very short tube, upper lip shortand truncately rounded, 
entire, lower lip large, concave, slipper-shaped ; flowers yellow, ‘white, or 
purple, solitary or corymbose ; stamens 2:— _ ... .. delxxvi—Calceolaria. 
(2) Corolla ringent, upper lip erect or reflexed, lower 3-lobed ; flowers 
yellow, buff or salmon-coloured, often with darker markings, usually solitary 
axillary, upper sometimes racemed ; stamens 4, didynamous :— delxxviii—Mimulus. 
(ii) Corolla tubular and indistinctly bilabiate, lobes subequal ; flowers 
erimson or scarlet, solitary or in lax dichotomous cymes; stamens 4, didyna- 
mous:— ... ae delxxvii— Russelia. 
(iii) Corolla rotate: — 
(1) Flowers vermilion, axillary, subracemose ; corolla limb 5-cleft ; 
stamens 4, didynamous :— ne ae ae 60 30 dclxxv—Alonsoa. 
(2) Flowers white or bluish, in axillary spikes or racemes ; corolla limb 
4—5-cleft ; stamens 2 :— ah ya asd me ct .. dclxxix—Veronica. 
LXXXII—BIGNONIACEAI— 
[Anatomical features —As far as known, the wood of the Indian arborescent 
genera has a normal structure. Numerous climbers of this family are found in 
America with « varied and anomalous structure. | 
[Botanical note—The details distinguishing the genera Amphtlophium, Bignonia, 
Tabebuia, and Tecoma, have not been available for me ; the species have been placed 
sometimes in one genus, sometimes in another. | 
(1) Fruit a 2-valved capsule, septum in fruit enlarged and deciduous with 
the placentas :- - 
(i) Capsule without wings along the margin :— 
(1) Stamens 5 perfect ; capsule very large. flat, septifragal, seeds wing- 
ed all round except at base; calyx large, curiaceous ; corolla wide campanulate ; 
flowers large, white or purple, in terminal racemes ; leaves bi-(or tri-) pinnate ; 
Trees :— is, ot sd. Rue Ae ere zp delxxi—Oroxylum. 
(2) Stamens 4 perfect, with or without 1 staminode ; rarely (Catalpa 
sometimes) 2 stamens and 3 staminodes :— , 
(A) Corolla salver-shaped, tube very long linear; calyx small cup- 
shaped ; flowers white, fragrant, in terminal panicles ; capsule 
flat, septifragal ; seeds many, winged; leaves bi-or tri-pinnate ; 
Trees ae ae Br delxxx—Millingtonia. 
(B) Corolla campanulate or funnel-shaped :— 
(a) Calyx spathaceous :— 
(x) Trees; flowers white, in terminal panicles or racemes; corolla 
tube long or short, cylindric below, campanulate above, lobes 
crisped, cienate, or incised; capsule usually flattened, some- 
times subeylindric; seeds many winged; leaves simply 
pinnate :— sie ae: be delxxxiv—Dolichandrone. 
(8) Trees; flowers orange to scarlet, in terminal racemes; corolla 
campanulate, limb sub-bilabiate with 5 broad lobes; capsule 
flattened, septum at right’ angles to the valves; leaves 
simply pinnate:— ... ep von bs delxxxvi— Spathodea. 
(y) Climbers; flowers usually purple, axillary or in terminal cor- 
ymbs ; capsule flat, smooth, septum parallel to the valves ; 
seeds many winged, 1-seriate ; leaves 3-foliate, or conjugate 
with tendrils at end of rachis :— ... dclxxxv—Macfadyena. 
(b) Calyx not spathaceous, but more or less campanulate and tooth- 
ed or truncate :— 
