142 KEY TO SUB-CLASSES, ORDERS AND GENERA. 
XX XV--CELASTRACEA. 
[Anatomical features.—In Hippocratea and Salacia, the repeated concentric bands 
of bast (phloem) are frequently interrupted and are often joined by radiai bands, 
so that on the transverse section numerous masses of xylem appear separated by 
tangential and radial bands of bast. With these exceptions, as far as known, the 
wood, even of climbing species, has a normal structure; the medullary rays are broad 
and the vessels large. | 
(I) Fruit a dehiscent capsule cr dehiscent distinct carpels :— 
(i) Leaves opposite ; seeds not winged :— 
(1) Petals free ; disk ; fleshy capsule 8—5-celled :— 
(A) Cymes axillary ; ovules 2 in each cell:--., .. ecxii— Huonymus., 
(B) Cymes mostly supra-axillary ; ovule1 in each cell :— 
ccxiii-—Glyptopetalum. 
(2) Petals free; disk fleshy ; capsule 2-celled, 2-lobed, 1 cell abortive, 
1 seeded :— BD ote ae nee Bo ah 20 cexx—Kurrimia, 
4 (3) Petals connate at the base ; capsule 1-celled, 1-seeded :—. 
ccexiv——Microtropis. 
(ii) Leaves mostly opposite ; seeds winged :-— 
(1) Capsule 3-valved :-— 
(A) Seeds winged nearly all round; petals crested:— ccxv—Lophopetalum. 
(B) Seeds winged at upper end; petals coriaceous, gland dotted :— 
ecxvi—Kokoona. 
(2) Capsule with 3 distinct carpels, like flattened pods; seeds winged at 
lower end :— ... nie 505 Be ae. ccxxii— Hippocratea. 
(iii) Leaves alternate :— 
(1) Leaves serrate ; flowers in cymose panicles ; stamens on edge of disk; 
climbers :— Soe 0¢ sia ae se HO bo .  eexyii—Celastrus. 
(2) Leaves mostly serrate; flowers in cymose dichotomous corymbs ; 
stamens under the disk ; erect ; mostly spinous :— = ccxix— Gy mnosporia, 
(11) Fruit indehiscent ; leaves opposite or sub-opposite :— 
(i) Stamens 5, inserted under edge of disk :— 
(1) Fruit a small white drupe; flowers in small subsessile cymes :— 
ecexvii —Pleurostylia. 
(2) Fruita black or brown drupe like a small olive ; flowers in pedunculate 
dichotomous cymes :— 502 < oc ack as ... ccexxi—Eleodendron. 
(ii) Stamens 3, inserted on the disk, or apparently on the ovary; fruit a 
berry ... 500 20 5480 Bas 300 és ... ¢@cexxili—Salacia. 
XXXVI--RHAMNACEA. 
[Anatomical features.—Structure of wood, even in climbers, normal as far as is 
known. | 
(1) Fruit superior, usually with persistent calyx beneath it :— 
(i) Leaves minute; spines in alternate pairs at right angles to the stem ; 
flowers solitary or fascicled, axillary or below the base of the spines :—cexxy—Colletia. 
(ii) Leaves not minute :— 
(1) Fruit a samara, girt at base or middle by calyx tube; leaves sub- 
bifarious, penninerved :— an ape sé 20t tee .. ecxxvii—-Ventilago. 
(2) Fruit a drupe :— 
(A) Drupe 1-stoned ; 1—4-celled, leaves palmately 3—-5-costate, sub- 
bifarious, stipules spinous, 1-straight 1-hooked :— ecxxviii— Zizyphus. 
(B) Lrupe 2—4-stoned, with small persistent calyx ; leaves sub-bifarius, 
penninerved :— 
(a) Leaves mostly alternate ; branches often arrested and spines- 
cent ; flowers in axillary fascicles or cymes ; disk thin lining 
the calyx tube :— 506 oe 5ue cexxix—Rhamnus, 
(hb) Leaves alternate ; flowers in axillary racemes ; disk nearly to the 
apices of the calyx lobes, ending just below the bifid tip :— 
ceexxiv- -Noltea. 
(c) Leaves mostly opposite ; branches often arrested and subspines- 
cent ; flowers sessile on terminal leafless paniculate branches ; 
| disk fleshy lining the calyx tube :— «» cexxxii—Sageretia. 
