7. Heads distinctly stalked. Perianth obovoid or club-shaped. Anthers 2-4, shorter than the filaments. Albumen ruminate. Lateral nerves of the leaves joined by arches near the margin.--Species 5. West Africa and Upper Nile. They yield timber and oil. (Under _Myristica_ L.) (Plate 49.) =Pycnanthus= Warb. Heads sessile or nearly so. Perianth cupular. Anthers 3-10. Albumen uniform. 8 8. Heads large, distant on the branches of a panicle. Anthers 3-4, as long as or somewhat shorter than the filaments. Leaves whitish below; lateral nerves joined by arches distant from the margin; transverse veins faint.--Species 1. German East Africa. (Under _Brochoneura_ Warb.) =Cephalosphaera= Warb. Heads arranged in dense racemes or panicles. Anthers 4-10, usually longer than the filaments. Leaves with forked lateral nerves and nearly as strong transverse veins.--Species 4. Madagascar. The seeds are used as a condiment and yield a fat. (Under _Myristica_ L.) =Brochoneura= Warb. FAMILY 83. MONIMIACEAE Trees or shrubs. Leaves undivided, without stipules. Flowers unisexual. Perianth simple, 3-6-lobed. Stamens 10 or more. Carpels solitary or several and then separate at the time of flowering, often sunk in the receptacle. Ovule 1. Seeds with a small embryo and fleshy albumen.--Genera 6, species 30. (Plate 50.) 1. Anthers opening by valves. Stamens numerous. Carpels 4 or more, sunk in the receptacle. Ovules erect. Perianth irregular, strap-shaped. Leaves alternate. Flowers solitary or in clusters.--Species 3. West Africa. (Plate 50.) [Subfamily =ATHEROSPERMOIDEAE=, tribe SIPARUNEAE.] =Glossocalyx= Benth. Anthers opening by longitudinal slits. Ovule pendulous. Perianth regular or nearly so. [Subfamily =MONIMIOIDEAE=.] 2 2. Receptacle (floral axis) small. Perianth-segments of the female flowers falling off singly. Stamens numerous. Carpel 1. [Tribe TRIMENIEAE.] 3 Receptacle large, cup-or urn-shaped, at length bursting. Perianth falling off entire and lid-like, or little developed and persistent. Carpels several or many. 4 3. Perianth of the male flowers protruding beyond the stamens. Flowers on long stalks, in lax racemes. Leaves alternate.--Species 2. Equatorial West Africa (Cameroons). =Chloropatane= Engl. Perianth of the male flowers concealed by the stamens. Flowers on short stalks, in dense racemes. Leaves opposite.--Species 3. Tropical and South Africa. They yield timber. (Including _Paxiodendron_ Engl.) =Xymalos= Baill. 4. Receptacle cup-shaped, subsequently spreading, not enclosing the carpels. Perianth falling off as a whole, lid-like. Stamens 10-12. Anther-halves confluent above. Leaves opposite. Flowers solitary or in [Illustration: MYRISTICACEAE. _FLOW. PL. AFR._ _Pl. 49._ J. Fleischmann del. Pycnanthus Kombo (Baill.) Warb. _A_ Part of a flowering branch. _B_ Male partial inflorescence. _C_ Male flower. _D_ Fruit, the pericarp cut lengthwise.] [Illustration: MONIMIACEAE. _FLOW. PL. AFR._ _Pl. 50._ J. Fleischmann del.