LEGUMINOS Z- CHiSALPINIEA. 115 
are fairly like those of Bauhinia, with an obliquely turbinate recep- 
tacle, lined by a glandular disk thickened at the rim.. The calyx is 
gamosepalous, bladder-shaped, and swollen anteriorly. It is divided 
only at the top into five obtuse teeth, which 
are imbricated in the very young bud. The 
corolla consists of five petals, in form resem- 
bling those of a papilionaceous corolla, but 
so arranged in bud that the posterior and 
smallest petal is inside the two lateral petals, 
which are themselves -overlapped by the 
outer pair. Each consists of an elongated 
claw, and a limb which is subauriculate at 
the base. The stamens are free, in two 
whorls. Hach consists of a declinate peri- 
gynous filament, and an introrse two-celled 
anther of longitudinal dehiscence. The 
gyneceum, inserted near the bottom of the 
receptacle,’ though curving towards its ante- 
rior wall in the expanded flower, consists of a 
shortly stipitate ovary, containing anatropous 
ovules’ arranged in two rows down its pos- 
terior wall, and a terminal bowed style, 
whose stigmatiferous apex looks backwards. 
The pod is narrow elongated and stipitate, 
edged by a narrow rib down the placentary angle; it dehisces at 
first down the dorsal angle, and later (not constantly) down the 
ventral. The shortly funiculate seeds contain within their coats a 
coloured embryo, surrounded by thick subcorneous albumen.* This 
genus consists of unarmed trees or shrubs from Europe, temperate 
Asia, and North America. Three or four species are known.* The 
Cercis Siliquastrum. 
Fia. 91, 
Longitudinal 
section of seed. 
Fie. 89. 
Fruit. 
Gertn., Fruct., ii. 308, t. 144.—Lamx., Dict., 
ii, 585; Suppl. ii. 694; Zi, t. 328.— DC., 
Prodr., ii. 518.—Spacu, Suit. d Buffon, i. 124. 
—ENDL., Gen., n. 6750.—B. H., Gen., 576, n. 
334.—Siliquastrum Grsn.—T., Instit., 646, t. 
414.—Apaws., Fam. des Pl., ii. 317. 
1 In C. canadensis there is a far larger pro- 
portion of the receptacular sac between the foot 
of the gynzceum and the vexillary petal than 
on the other side of it; and, as in Bauhinia 
and Griffonia, it is on the side of the ovary 
directed towards this larger depression that 
the ovules are inserted. (See Adansonia, ix 
223.) 
2 They have two coats, and the micropyle is 
upwards and outwards. 
* The chalazal projection seen in figs. 90, 91, 
is the result of an inconstant hypertrophy of the 
external integument. 
4 Dunam., Arbr., t. 1.—Sretu., Fl. Grec., 
t. 367.—Hoox., in Bot. Mag., t. 1198.—V. 
Hourtt, Fl. des Serres, viii. t. 849.—A. GRAY, 
Unit. States Hapl. Exped., Bot. ii. t- 3.— 
Watp., Rep., i. 808. 
12 
