’ 
KEY TO SUB-CLASSES, ORDERS AND GENERA. 145 
XL—ANACARDIACE Ai—cont. 
(ii) Petioles spurred ; ovary inferior ; patals porsistent:— ... cclxvi-——Holigarna. 
(III) Leaves simple, palmately 5-costate, aromatic ; calyx 3-fid; petals 3; 
stamens 3, exserted ; drupe coriaceous, turbinate, 3-grooved; stone triquetrous, 
3-celled and-seeded : — ae Af de eas +3 eclyvx— Rum phia. 
(IV) Details not to hand :— dj wae one diet eclxix—Harpephyllum. 
XLI—MORINGACE Ai-- 
(1) Characters of the order (q.v. in the Synopsis):— __... ..  eclxxi—Moringa 
XLII—CONNARACE Ai— 
(I) Leaves imparipinnate :— 
(i) Follicle solitary, sessile ; peas aie a accrescent, clasping base of 
celxxii-—Rourea. 
follicle :— sie 
(ii) Follicle ‘solitary, stipitate ; “calyx. ‘persistent, not accrescent, clasping 
the pedicel of the stipitate follicle :— ... eelxxui—Connarus, 
(II) Leaves 1-foliate; follicle — solitary, stalked, "velvety, carved ; sepals 
valyate, snberect, not accrescent:— ... ae sy ; ceelxxiv—Hllipanthus. 
XLITI—LEGU MINOS Ai— 
A— PAPILIONRAE. \ 
[Anatomical features.—As far as is known, throughout the whole order the wood 
fibres have always simple, not bordered, pits; bands of wood parenchyma, more or 
less concentric, oft-n interrupted, are 2 common feature in this order. Papilionaceous 
trees show a great variety in the structure of their woods. Distinct heart wood, 
generally hard and dark-coloured, occur among others in Ougeintia, Pterocarpus, most 
Dalbergias. There is no heart wood in Sesbanza, Brythrina, Butea, Dalbergia 
lanceolaria, and Pongamia. Extremely soft and light is the pith-like wood of 
Aischynomene, which mainly consists of thin walled parenchyma. Of climbers, 
Millettia auriculata, Derri sscandens, and Spatholobus Roxburghtt have the usual 
anomalous structure, concentric strata of bast (phloem) alternating with broader 
strata of wood, which is light, soft, and porous because it mainly consists of very wide 
vessels. The stems of other climbers being often flat, fluted, or otherwise irregular, 
-the alternating strata of bast and wood frequentiy do not form complete rings. 
Dalbergia paniculata, though a tree, has a structure resembling that of climbing 
stems, namely, bands of bast (phloem) alternating with broader strata of wood. On 
the other hand some climbing Papilionaceous ‘plants, especially Dalbergias, have 
stems of a normal structure. | 
(1) Stamens free :— 
(i) Leaves simple ; pod more or less turgid, dehiscent :— 
(1) Leaves subverticillate or opposite:—, ... 2 ecexxxvi —Oxylobium. 
(2) Leaves alternate :— 
(A) Calyx remarkably indented on its insertion on the pedicel :— 
cecexxxili~ Podalyria. 
(B) Calyx not remarkabiy indented on its insertion on the pedicel :— 
ecexxxv—Chorizema, 
(ii) Leaves digitately 3-foliate, exstipellate ; pod compressed, dehiscent :- 
contexte Or elnpee 
(iii) Leaves pinnate, leaflets exstipellate :— 
(1) Pod turgid, dehiscent :— 
(A) Pod fleshy, coriaceous, continuous within, seeds 1—2, red, arillate :— 
cccxxxi—Ormosia. 
(B) Pod woody, spongy within, divided into 3 —5 cells, each with a large 
subglobose seed :— te ecexxxvii— Castanospermum. 
(2) Pod indehiscent, or (Sophora) very tardily dehiscent :— 
(A) Pod moniliform, i in one species winged :— ... .. eceexxix—Sophora. 
(B) Pod flat, equal :— 
(a) Keel obtuse, clei incurved ; pod ar hee ahat flowers yel- 
low :— ... CCCxxx—Cal]purnia. 
(b) Keel incuryed into a beak ; pod leathery ; ‘flowers pink :— 
ecexxxii— Virgilia, 
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