LXI. CACTEA. 129 
1-celled, with several parietal placentas ; style filiform, termi- 
nal; stigmas as many as the placentas. Fruit succulent. 
Seeds mostly without albumen.—Succulent, mostly leafless 
plants, almost all of American origin. 
1. RHIPSALIS, Gertn. 
Tube of the perianth not produced beyond the ovary ; limb 
rotate, of 12-18 short, scale-like lobes, the outer resembling 
sepals, the inner petaloid. Stamens many, about equalling 
the lobes of perianth. Style filiform ; stigmas 3-6, radiating. 
Berry globose, smooth, often crowned with the dried-up limb 
of the perianth. Seeds numerous, exalbuminous.—f7. Cap. il. 
p. 479. 
Slender succulents, growing on trees, with whip-like (or leaf-like, often 
jointed) stems, and small, lateral flowers.—R. cassytha, or some closely-allied 
species, grows in Caffraria and at Natal; branches slender, green, terete, 
pendulous, remotely scaly. 
Orpver LXII. FICOIDEA. 
Flowers regular, bisexual. Calyx gamosepalous, 4—5-8-cleft, 
adnate or free, mostly coloured within. Petals either very 
numerous or, more usually, 0. Stamens perigynous or sub- 
hypogynous, definite or indefinite, free. Ovary inferior or 
superior, 2-5-20-celled or of 2-5 separable cocci; ovules 
many or few or solitary, usually on long cords, attached to the 
base or inner angle of the cavity ; stigmas as many as the 
carpels. Fruit capsular or nut-like. Embryo curved round 
a central, mealy albumen.—Herbaceous or suffruticose plants, 
with more or less fleshy, mostly quite entire leaves, with or 
without stipules. Flowers either showy or minute. 
Tribe 1. MESEMBRYANTHE®R. Petals very numerous, narrow. Stamens 
many. Ovary inferior, 5- or many-celled. Capsules 5-20-celled, opening 
by as many valves.—Leaves sessile, mostly opposite, without stipules. 
Herbs or shrubs, with fleshy leaves and bright 
flowers 1. MESEMBRYANTHEMUM. 
Tribe 2. TrETRAGONIE®. Petals 0. Ovary inferior. Drupe 1-9-celled, 
indehiscent, often winged.—No stipules. 
Herbs or shrubs, with flat, alternate leaves . 2. TETRAGONTIA. 
Tribe 3. A1zorprx. Petals 0. Stamens definite or indefinite, mostly 
perigynous. Ovary superior. Capsules loculicidal.—No stipules. 
Stamens perigynous. 
Stamens about 20, in the base of the calyx- 
tube. Ovary 5-celled ; ovules 2-many in 
each cell . . . 3. AIZOON. 
