72 cxxn. CYTINACE^E. (J. D. Hooker.) [Sapria. 



Suds globose; bracts white and pink. Flowers foetid, 5-6 in. diam., tube blood- 

 red within ; segments fleshy, warted ; i-ing at throat clothed with filiform processes ; 

 disk of column rosy. 



ORDER CXXIII. ARISTOLOCHIACEJE. 



Herbs or shrubs, often climbing. Leaves alternate, entire or 3-5-lobed, 

 exstipulate. flowers 2-sexual, often large, usually lurid, terminal axillary 

 or lateral, solitary racemose or cymose, bracteate or not. Perianth supe- 

 rior, regular or irregular, 3-lobed or tubular and variously shaped, lobes 

 valvate. Stamens 6 or more, subsessile in a ring round the base of the 

 style, cells parallel opening by dorsal slits. Ovary 4-6-celled, placentas 

 parietal, free or meeting in the axis ; style columnar, stigma lobed ; ovules 

 numerous, anatropous. Fruit capsular or baccate. Seeds numerous, 

 various, albumen copious fleshy ; embryo minute. Genera 5, species 

 about 200, chiefly tropical. 



Perianth short, regular, 3-lobed. Ovary very short .... 1. ASARUM. 



Perianth short, regular. Stamens 1-seriate. Ovary linear . . 2. BRAGUNTIA. 



Perianth regular. Stamens 2-seriate. Ovary linear .... 3. THOTTEA. 



Perianth tubular with an inflated base, irregular ..... 4. AEISTOLOCHIA. 



1. ASARUIVI, Linn. 



Perennial herba ; rootstock stout, woody. Leaves radical. Flowers 

 solitary, terminal, peduncled, purple. Perianth shortly campanulate. 

 regular, persistent, 3-lobed. Stamens 12, connective produced. Ovary 

 inferior or ^-inferior, 6-celled ; styles 6, tubular, grooved or 2-fid. Fruit 

 coriaceous, bursting irregularly. Seeds boat-shaped, convex face wrinkled, 

 opposite face winged or with a fleshy raphe. Species 13, N. temperate 

 hemisphere. 



A. himalaicum, Hook. f. if Thorns, mss.; Duchartre in DC. Prodr. 

 xv. 1. 424 ; leaves long-petioled rounded-ovate deeply cordate finely acumi- 

 nate. Klotzsch in Monatsb. Berl. Akad. 1859, 385 ; Braun Ind. Sem. Hort. 

 BeroL App. 1861, 12. 



SIKKIM HIMALAYA ; alt. 9-11,000 ft., J. D. H. 



Rootstock slender. Leaves 3-4 in. diam., membranous; petiole 4-8 in., slender. 

 Peduncle 1-2 in. Perianth, broadly campanulate, lurid purple, f in. diam., puberu- 

 lous, lobes triangular. Connective with a subulate tip. Belongs to the section 

 Euasarum with a European and N.W. American species. 



2. BRAOANTIA, Lour. 



Shrubs or undershrubs ; hairs stellate. Leaves petioled, 3-5-nerved ; 

 veins closely reticulate beneath. Flowers axillary or subradical, cymose, 

 bracteate. Perianth shortly campanulate, equally 3-lobed, deciduous. 

 Stamens 6-12, 1-seriate, free or connate, connective thick. Ovary elongate, 

 4-celled ; style short, stigmas 3 or more -linear ; ovules 2-seriate. Capsule 

 elongate, 4-gonous, septicidally 4-valved, valves separating from a pla- 

 centiferous column. Seeds oblong, 3-gonous, rugose or deeply pitted, 

 often coated with remains of the placenta. Species 4 or 5, Malayan and 

 Indian. 



* First pair of basal nerves reaching far beyond the middle of the leaf. 

 Cymes axillary. Stamens 9-12. 



