KEY TO SUB-CLASSES, ORDERS AND GENERA, 168 
LXXIII—~SALVADORACEA Ai— cont. 
inches long, and 1} to 2 inches broad ; stipules none. Racemes axillary, small, erect, 
frequently compound; bractes small, subulate ; flowers small, yellow, calyx 4-toothed ; 
petals 4, oblong, expanding, apices revolute; nectary a ring surrounding the base of 
the germ, staminiferous ; filaments 4, shorter than the petals, hairy, inserted on the 
margin of the nectary, anthers oval ; germ superior globular, style short, stigma headed. 
Berry vertically compressed, succulent, the size of a large cherry, when ripe it has a 
deep purple bloom which makes it very inviting to the eye; seed 1, seemingly 2-lobed, 
of a lively purple throughout. } 
Observation :—The wood of the tree is white, close-grained and durable ; the natives 
employ it for a variety of purposes.’ 
(1) Unarmed ; Ovary 1-celled ; trees :— i ba ee see ve 
(i) Corolla gamopetalous :— ‘ a5 ne ia dixzvi—Salvadora. 
(ii) Petals free :— ts dixxv—Dobera, 
(II) Armed ; ovary 2-celled : “petals fred - E darmentose shrab :-- dixxvii—Azima. 
LXXIV—APOCYNACE Ai— 
[ Anatomical features.--The vascular bundles are bicollateral, consequently phlceum is 
found on the outer edge of the pith. Most species have milky juice, which is 
contained in non-articulated laticiferous tubes in the pith and bark, and accompanying 
the nerves in the leaves. The milk of several species yield “ Caoutchouc”. The vessels 
in the wood are usually arranged in longer and shorter radial lines. Many of the 
climbing species have wood of formal structure with large vessels ; some, however, are 
abnormal, the wood having furrows filled up with phloum; while in other species the 
stem consists of numerous more or less radial wedges of wood, separated by phlceum. ] 
(I) Anther, cells rounded at base, not conniving in a coue around, and adher- 
ing to, the stigma :— 
(i) Carpels connate, torming a 1|-or 2-celled ovary, seeds without wing or 
hairs :— 
(1) Armed with spines; flowers Jasmine-like; frait a black berry, 
1—4-seeded :— EE es dixxx—Carisea,. 
(2) Unarmed ; climbers or sar rmentose shrubs : =~ 
(A) Wlowers large, yellow or orange, bell-to funnel-shaped, many 
on poantine |i peduncies 3; leaves 3--4-whorled :— dciii—Allamanda, 
(B) Flowers medium, white or yellowish, salver-shaped in terminal 
cymes ; leaves opposite :—— : dxevii—Landolphia, 
(C) Flowers small, yellow, salver- -shaped, in axillary trichotomous 
cymes ; leaves opposite : dc so dixxxviii—Chilocarpus 
(ii) Carpels more or less distinct :— 
(1) Calyx eglandular within; flowers salver-shaped :—— 
(A) Leaves usually whorled ; disk one pane flowers white or pink, 
corymbose, lateral :—— rey dixxxi—Ravwolfla, 
(B) Leaves opposite ; flowers Rahitael lerisille in terminal, subterminal 
or axillary cymes ; fruit of 2 ie or recurved 1—2-seeded 
fleshy berries :—- 3 ae dixxsxii—Hunteria. 
(C) Leaves alternate ; branches thick :— 
(a) Venation of leaves in conspicuous ; flowers white with red tube- 
mouth, large, in terminal cymes; seeds 1—2 compressed, 
peltately attached to placentas:— ... és dlxx1liti—C erbera. 
‘(b) Venation of leaves prominent; flowers, white, yellowish, 
rose-purple, or variegated, in terminal cymes ; fragrant ; seeds 
many, winged :— dlxxxviii—Plameria, 
(2) Calyx glandular within, or if (Tabernemontana) eglandular, then 
the fruit follicular :— 
(A) Leaves alternate ; flowers yellow, funnel-shaped, large, in terminal 
cymes ; fruit turbinate, seeds 2—4: —~ $) dixxxv—Thevetia. 
(B) Leaves whorled (rarely in Ochrosia alternate); flowers salver 
: shaped, usually white (rarely pink) :— 
(a) Flowers in terminal cymes ; corolla lobes overlapping to the right; 
fruit of, usually 2, bright yellow drupes; trees of salt 
marshes :—— .., oe ave one oe ee )xxxiv—Ochrosia, 
11l-a 
