Leaves regularly pinnatisect, with linear segments. Stem tall.--Species 2. Madagascar and Comoro Islands. (Including _Vonitra_ Becc.) =Phlogella= Baill. 34. Spadices simple. Petals lanceolate. Anther-halves linear. Style conical.--Species 3. Madagascar. =Haplodypsis= Baill. Spadices much branched. Petals ovate or orbicular. Anther-halves oblong or ovate. Style 3-partite. 35 35. Flowers monoecious. Sepals of the male flowers orbicular. Stamens unequal in length. Stigmas awl-shaped. Albumen ruminate.--Species 5. Madagascar. Leaves used for plaiting-work. =Phloga= Nor. Flowers dioecious. Sepals of the male flowers elliptical. Stamens subequal. Stigmas short and thick. Albumen homogeneous.--Species 2. Madagascar and Comoro Islands. =Ravenea= Hildebr. & Bouché ORDER SPATHIFLORAE FAMILY 19. ARACEAE Leaves usually net-veined. Flowers in spadices, without bracteoles. Perianth simple or wanting. Fruit indehiscent or bursting irregularly, usually berry-like. Seed-coat fleshy.--Genera 33, species 150. (Plate 12.) [Illustration: PALMAE. _FLOW. PL. AFR._ _Pl. 11._ J. Fleischmann del. Raphia Laurentii De Wild. _A_ Inflorescence. _B_ Male flower-buds. _C_ Male flower cut lengthwise. _D_ Stamen. _E_ Female flower.] [Illustration: ARACEAE. _FLOW. PL. AFR._ _Pl. 12._ J. Fleischmann del. Hydrosme grata Schott _A_ Leaf. _B_ Inflorescence and spathe. _C_ Stalk of the inflorescence. _D_ Inflorescence without the spathe. _E_ Stamen. _F_ Stamen from above. _G_ Pistil. _H_ Pistil cut lengthwise. (_B_-_H_ partly from a drawing in the Vienna Hofmuseum.)] 1. Flowers hermaphrodite. 2 Flowers unisexual. 5 2. Perianth none. Ovary incompletely 2-celled with several ascending ovules. Climbing shrubs. Leaves stalked, lanceolate.--Species 2. West Africa. Used as ornamental plants. (_Raphidophora_ Schott). [Tribe MONSTEREAE.] =Afroraphidophora= Engl. Perianth of 4-6 segments. 3 3. Ovary 1-celled. Ovules 2 or more. Tall herbs. Juice milky. Root-stock tuberous. Leaves sagittate; stalk prickly.--Species 1. West Africa. Used for making salt. [Tribe LASIEAE.] =Cyrtosperma= Griff. Ovary 2-3-celled. Juice not milky. 4 4. Ovule one in each cell, ascending, inverted. Seeds exalbuminous. Climbing shrubs. Leaves stalked, lanceolate to ovate. Spathe oblong or ovate.--Species 1. Madagascar and Comoro Islands. [Tribe POTHOEAE.] =Pothos= L. Ovules several in each cell, pendulous, straight. Seeds albuminous. Herbs with a creeping root-stock. Leaves sessile, linear, sword-shaped. Spathe linear, sword-shaped, forming a continuation of the flowering stem.--Species 1 (_A. Calamus_ L., sweet-flag). Introduced in the Mascarene Islands. Yields tanning-materials and is used in the preparation of perfumes, liquors, snuff, and medicaments. [Tribe ACOREAE.] =Acorus= L. 5. Perianth present. 6 Perianth none. 8