164 KEY TO SUB-CLASSES, ORDERS AND GENERA. 
LXXIV--APOCYNACE Ai\—cont. 
(b) Flowers in lateral cymes towards the end of branches; corolla 
lobes overlapping to the left; fruit of 2 slender follicles ; inland ‘ 
trees and shrubs:-—__... a Sis ads _. dxc——Alstonia, 
(C) Leaves opposite, or if (Ellertonia) 2~-4-whorled, then climbing :—— 
a) Climbing or twining shrubs :— 
(x) Flowers white, salver-shaped, in subterminal cymes; fruit 
follicular with many-seriate winged seeds:—- dlxxxix LEllertonia, 
(8) Flowers blue or white, rather large, salver-shaped. axillary, 
solitary ; fruit follicular with 2-seriate seeds, truncate at 
both ends :— ae Ae ro ste ... dlxxxvii— Vinca. 
(b) Erect trees and shrubs :— 
(x) Corolla lobes overlapping to the right; flowers pink, salver- 
shaped, in terminal cymes; fruit of 1-—2 obovoid fleshy or 
coriaceous carpels, 1--2-seeded :-— Sec ... Qlxxxvi-—Kopsia, 
(8) Corolla-lobes overlapping to the left; flowers white, salver- 
shaped, in axillary or terminal cymes; fruit of 2 follicles :—— 
(*) Stamens near base of tube; follicles elongate, incurved ; 
seeds with a coma of hairs:... nee .. dxceili-—Holarrhena, 
(**) Stamens at or above the middle of the tube; follicles ov- 
oid, oblong, or reniform, fleshy or coriaceous; seeds in an 
orange coloured aril :— “fae ... dxciii—Taberneemontana. 
(II) Anthers conniving in a cone around the stigma and adhering to it, each 
cell produced downwards intoa subulate empty spur; ovary of 2 distinct carpels, 
united by the style; fruit of 2 follicles ; seeds hairy at one or both ends :— 
(i) Corolla tube with 5—10 scales or processes in the throat :— 
(1) Leaves 3—4-whorled follicles ; erect ; flowers white, pink, or red, 
(often double), salver-shaped, in racemose cymes ; corolla lobes short, overlapping 
to the right ; shrubs:— __... Ay ais a see aes ... dxevii--Nerium,. 
(2) Leaves opposite :— 
(A) Follicles erect ; flowers galver-shaped, white, yellow, or red, 
in terminal or subaxillary cymes; corolla lobes short, over- 
lapping to the left; trees:——... oe EA ... dxevi-—Wrightia. 
(8) Follicles divaricating ; climbers or sarmentose shrubs: — 
(a) Flowers funnel-shaped with campanulate throat, white or pink, 
in terminal 2-chotomous cymes; corolla lobes broad twisted :— 
dxcvix—Roupellia. 
(b) Flowers fumnel-shaped with companulate throat, white, pink, 
or yellow, often variegated, interminal cymes; corolla lobes 
produced in twisted tails :—-- wee ... Gxeviii-~Strophanthus, 
Gi) Corolla tube naked, without scales or processes ; climbers (except 
Kicke«ia) :— 
(1) Corolla urceolate or subglobose with short valvate lobes; flowers 
small, greenish, in dense corymbosely panicled cymes :— cee -. dc--Urceola, 
(2) Corolla large funnel-shaped with campanulate throat :— 
(A) Flowers white in terminal cymes :— ... abe «. dci—-Beaumontia. 
(B) Flower white, fragrant, in simple racemes :— ..  dcii--Mandevilla. 
(C) Flowers yellow or greenish, im subumbellate or corymbose 
racemes :—— sae “eh bse ne .. dceiv—Hemadictyon 
(3) Corolla sancer-shaped or rotate, with very short tube; flowers white 
in subaxillary 2-chotomous cymes ; leaves minutely dotted :-- . ... dxcv——Vallaris. 
(4) Corolla salver-shaped, tube or throat long, sometimes ventricose 
or subcampanulate :— 
(A) Flowers very large, white in lax terminal or pseudaxillary cymes ; 
corolla throat subcampantlate and long, tube very short, lobes 
overlapping to the right and sharply twisted to the left :— 
(B) Flowers medium :-- ... Me 2 co ... dev-—Chonemorpha 
(a) Tree ; flowers yellowish in congested cymes ; corolla lobes 
linear :-— ie Bae sg bes dee .. dxci—Kickxia. 
(b) Climbers :— 
(x) Corolla lobes spirally twisted, small, shorter than the tube :—— 
(*) Disk fleshy, 5-lobed, lining the calyx tube, its connivent 
lobes adnate to, and surmounting the ovary ; flowers 
yellowish in axillary and terminal cymes:— devii—-Epigynum. 
