fco. OCTOKNEMATACEAE — 6l. LORANTHACEAE iy$ 



FAMILY 60. OCTOKNEMATACEAE 



Shrubs or trees. Leaves alternate, undivided, without stipules. Flowers in 

 axillary racemes. Petals 5, valvatc in bud. Stamens 5, opposite the petals ; 

 filaments short. Disc obscure. Ovary inferior, i-celled, with a free filiform 

 placenta and 3 pendulous ovules. Style divided into 3 — 5 two- or three-cleft 

 lobes. Fruit woody, surrounded by the fleshy leceptacle. Seeds with a thin 

 coat ; embryo minute, situated at the apex of the S-furrowed albumen. (Under 

 OLACACEAE.) 



Genus i, species 3. Equatorial West Africa. . . Octoknemu Pierre 



SUBORDER LORANTHINEAE 



FAMILY 61. LORANTHACEAE 



Shrubs, parasitic upon trees. Leaves undivided, exstipulate, sometimes scale- 

 like. Perianth simple, with 2 — 6 valva.te segments, often surrounded at the 

 base by a calyx-like outgrowth cf the receptacle. Stamens as many as and 

 opposite the perianth-segments and inserted on them. Ovary inferior, with 

 I —4 indistinctly developed ovules. Style and stigma simple. Fruit succulent. 

 Seeds albuminous. • — Genera, 4, species 300. (Plate 37.) 



1. Receptacle with a calyx-like outgrowth surrounding the base of the perianth. 



Flowers usually hermaphrodite. Anthers usually stalked and opening 

 by two longitudinal slits. Style more or less filiform. Leaves 

 well- developed. ■ — Species 250. Tropical and South Africa. Some 

 are used medicinally. (Plate 37). [Subfamily LORANTHOIDEAE.] 



LORANTHUS L. 



Receptacle without a calyx-like outgrowth. Flowers unisexual. Anthers 



sessile. [Subfamily VISCOIDEAE.] 2 



2. Anthers adnate to the perianth ; cells several or many, opening by pores. 



Placenta basal. Flowers in clusters of 3 or more. — Species 50. Some 

 of them yield bird-lime or are used medicinally. " Mistletoe." [Tribe 



VISCEAE.] Viscum L 



Anthers seated on the perianth, but not adnate to it ; cells 1—2, opening 

 by longitudinal or transverse slits. Placenta central. Leaves scale- 

 like 3 



3. Anthers i-celled, opening by a transverse slit. Perianth of the male flowers 



2^5-parted, of the female 2-parted. Flowers dioecious, solitary. — • 

 Species i. North-West Africa. [Tribe ARCEUTHOBIEAE.] 



Arceuthobium ]\Iarsch. Bieb. 



Anthers 2-celled, opening by 2 longitudinal slits. Perianth 3-parted. 



Flowers monoecious, disposed in rows. — Species 5. Madagascar and 



neighbouring islands. {Bifaria Van Tiegh.) [Tribe PHORADEND- 



REAE.] Korthalsella Van Tiegh. 



