KEY TO SUB-CLASSES, ORDERS AND GENERA. 137 
XIX—MALVACEAi—cont. 
(3) Stigmas coherent in a club-shaped mass :— 
(A) Bracteoles 3—5, small; seeds not cottony :— ... ... xciv—Thespesia, 
(B) Bracteoles 3, large ; seeds cottony :— .. xev-—Gossypium, 
({1) Staminal tube short, divided into filaments ; calyx leathery ; ; leaves 
digitately compound :— 
(i) Stamens many ; fruit woody, indehiscent, filled with mealy pulp :— 
xcvil-—Adansonia. 
(ii) Stamens many ; fruit a 5-valved capsule, filled with silky wool :— 
xcviii—Bombax, 
(iii) Stamens 5 ; fruit a 5-valved capsule, filled with silky wool :— 
xcix—~Hriodendron. 
(III) Staminal tube divided into 5 antheriferous segments; leayes simple, 
penninerved, scaly backed:— .., “ed ... C—Cullenia, 
(LV) Stamina) tabe divided into numerons antheriferous segments ; ; leaves 
simple, penninerved, scaly backed:— ... noe St eee Aas ... ci--Durio, 
XX—STERCULIACH Ai— 
(1) Flowers 1-sexual or polygamous :— 
(i) Anthers 5—25; fruit carpels dehiscent forming 1—5 apocarpous fol- 
licles :— 
(1) Flowers in axillary or terminal panicles ; anthers capitate :— 
cii—Sterculia. 
(2) Flowers in axillary clusters ; anthers verticillate in a single row :— 
ciii—Cola. 
(ii) Anthers 5; fruit carpels woody and indehiscent :— »-» civ—Heritiera,. 
(II) Flowers bisexuzl; fruit capsular, seeds winged; flowers axillary solit- 
ary.2— BLA sis cvii— Pterospermum. 
(111) Flewers bisexual ; seeds not winged, or if (Melochia, 1 species) winged, 
these flowers in umbellate corymbs ; 5 leaves palmately lobed or angled :— 
(i) Capsule very small, hairy :— ... mal os a5: ... cix—Dombeya. 
(ii) Capsule ovoid, woody or coriaceous :— .. CVii—Hriolzna. 
Gii) Capsule cylindric, coriaceous, fay), with twisted ‘carpels : =e 
cvi— Helicteres. 
(iv) Capsule turbinate, membranous:— .. ... exiv-—Abroma. 
(IV) Flowers bisexual ; seeds not winged ; leaves not lobed nor angled :— 
(i) Fruit baceate, indehiscent, subpentagonally ovoid, with subligneous 
rind filled with pulp, 5-celled, 1O—20 seeds in each cell; leaves oblong; flowers 
in clusters on old branches and stems 3 Sepals 5, rosy ; petals 5, creamy, hooded 
with a spathulcid appendage ; stamens 5 with 5 staminodes:— ... cxili—Theobroma. 
(ii) Fruit a capsule ; trees :— 
(1) Capsule membranous, inflated; leaves broad ovate-cordate ; 
flowers pink in lax axillary cymes:— .. --. cv—Kleinhovia. 
(2) Capsule oblong, woody, tubercled ; leaves obliquely ovate-oblong 
flowers yellow in axillary cymes : — ack oxy_—Guaguma: 
(3) Capsule obovoid, verrucose ; leaves elliptic- ‘oblong ; flowers in 
are foscicles :— pee vee ... ¢eXvi—Leptonychia, 
(iii) Fruit a capsule; mostly shrubs :— 
(1) Capsule 5-valved ; flowers solitary axillary :— ... ¢cx—Melhania. 
(2) Capsule 5-valved (seeda i in 1 species winged) ; flowers small clus- 
tered or in umbellate corymbs :— ae “te ... exi—Melochia, 
(3) Capsule 2-valved ; flowers ‘small, clustered : = os cxii—Waltheria, 
XXI—TILIACEA— 
[ Anatomical features.—Sacs containing mucilage—wanting in Elzocarpus— 
in pith, bark and leaf parenchyma. | 
(1) Flower pedicels with a foliaceons, partly adnate, bract :— exvii—Tilia, 
(IL) Flower pedicels without foliaceous adnate bract :— 
(i) Sepals connate into a campanulate calyx, irregularly 3—5-lobed :— 
exvili—Berrya. 
(ii) Sepals free ; petals as a rule with a thickened or glandular claw :— 
(1) Fruit a drupe with several pyrenes :— ee ... cCxix—Grewia, 
