284 DICOTYLEDONS. VIOLACE.^. 



2. D. longifolia, leaves radical obovate tapering below into a 

 long footstalk erect, scape with a simple raceme, p. 98. Bogs. 



3. D. a?iglica, leaves radical oblongo-spathulate tapering down 

 into a long footstalk erect, scape with a simple raceme, p. 98. 

 Bogs. 



ORDER LXII. CISTE^E. Juss. 



CaL 5 -parted. Petals 5. Stamens indefinite. Ovary 1. Style 

 and Stigma 1. Capsule many-seeded, many-valved ; some- 

 times 1-celled, with the placentas in their middle; sometimes 

 many- celled, with dissepiments proceeding from the middle of 

 the valves. Seeds numerous, round. Embryo recurved or 

 spiral, surrounded with a somewhat fleshy albumen. (Radicle 

 at the opposite extremity of the seed to the umbilicus. 

 Br. MSS.*) 



Shrubs or Under-shrubs. Leaves opposite, with or without sti- 

 pules. Flowers in racemes or corymbs. Mirl. 



1. CISTUS. 



CaL of 5 leaves, 2 smaller than the rest. Pet. 5. Caps, with 

 3 valves and many seeds. 



1. C. Helianthemum, somewhat shrubby procumbent, leaves el- 

 liptical oblong somewhat hairy mostly white and pubescent be- 

 neath, the margin slightly revolute, stipules lanceolate, p. 170. 

 Dry pastures. 



ORDER LXIII. VIOLACE^E. Vent. 



CaL 5 -cleft. Pet. 5, irregular. Slam. 5. Anthers often united. 

 Style and Stigma 1. Capsule 1-celled, 3-valved, many-seed- 

 ed. Seeds attached to the middle of the valves. Embryo 

 in the axis of a fleshy albumen. Radicle opposite the hilum. 



Herbs with alternate leaves and stipules. 



I.VIOLA. 



CaL 5-cleft, the segments produced at the base. Upper petal 

 spurred at the base. 



a We are obliged to Mr. Brown for the knowledge of this important pe- 

 culiarity in the structure of the seeds of Cistus. The true direction of the 

 radicle had been previously overlooked by carpological botanists, (unless 

 Gsertner intended to indicate it by the term " radicula centripeta" which he 

 applies to Cistus and Hellanthemum,) and, as Mr. Brown has remarked to us, 

 offers, by this curious anomaly, a character by which not only the limits of 

 CiatefK can be positively defined, but which indicates the affinity of Lechea 

 and Hudsonia to this order, in both which he has observed the same struc-> 

 Jure. 



