GYNANDRIA— HEXANDRIA. Aristolochia. 53 



6 cells, and 6 valves, with double partitions from their 

 inflexed margins. Seeds numerous in each cell, depress- 

 ed, horizontal, lying over each other, triangular, with a 

 dilated or thickened margin ; " albumen heart-shaped." 

 Gcjcrtner ; " embryo certainly proving dicotyledonous in 

 germination." Jussieu. 

 Perennial, herbaceous or shrubby, erect, or more generally 

 climbing. Leaves alternate, stalked, simple, very seldom 

 lobed, usually heartshaped. Fl. axillary, stalked. The 

 analogy of Asanim, v. 2. 242, must justify us in calling 

 a cali/x what Linnaeus and others have taken for a corolla. 



1. A. Clematitis. Common Birthwort. 



Leaves heartshaped. Stem erect. Flowers aggregate, up- 

 right. Calyx unilateral. 



A. Clematitis, Linn. Sp. PI. 1364. Willd. v. 4. 1 63. Fl. Br. 947. 

 Engl. Bot. V. 6. t. 398. Willd. suppl. t. 238. Mill. Illusfr. t. 75. 

 Hook. Loud. t. 149. Dicks. Dr. PL 14. Bull. Fr. t. 39. Fl. Dan. 

 M235. Lob. Ic. 607./. 



A. n. 1029. Hall. Hist. v. 1. 240. 



A. Clematitis recta. Bauh. Pin. 307. Mill. Ic. 34. t.5l.f. 1 . 



A. Clematitis vulgaris. Clus. Hist. v. 2. 71.^". 



A. multiflora. Riv. Monop. Irr. t. 116. 



A. longa. Trag. Hist. 178. f. Matth. Falgr. v. 2.13. f. Dalech. 

 Hist. 977./. 



A. longa vulgaris. Camer. Epit. 42\.f. Best. Hort. Eyst. cestiv. 

 ord.4. t.3.f.2. 



A. rotunda. Fuchs. Hist. 90-/. 



A. Saracenica. Ger. Em.847.f. Dalech. Hist. 979. 



In woods, thickets, and especially among the ruins of nunneries. 



In a wood two miles from Tliorndon Essex ; also in Cambridge- 

 shire. Blackstone. Near Maidstone, and in other parts of Kent. 

 Huds. At Godstow nunnery. Sibth. Sturston, near Diss. Mr. 

 Woodward. Carrow abbey, near Norwich. Reo. Dr. Sutton. 

 Kencot, Oxfordshire. Bishop of Carlisle. 



Perennial. July, August. 



Roots creeping deep in the ground, long, slender, difficult of extir- 

 pation. Herb smooth, bright green. Stems about 2 feet high, 

 upright, zigzag, not climbing, round, leafy, striated, unbranch- 

 ed. Leaves rather coriaceous, without stipulas, heartshaped 

 with a wide space at the base, entire, with pedate ribs. R. 

 several from the bosom of each leaf, on simple stalks, erect, 

 pale yellow, or buff-coloured, without scent, scarcely perfecting 

 any /ruJt, except by the assistance of some small insect 3 see 

 Introd. to Botany, ed. 5. 273. 



