ON A GRARIA CEM. 



475 



a loculicidal and four-valved capsule.^ Seven or eight species ^ of 

 iOi^ezia are known ; they are herbs with alternate or opposite leaves, 



Lopezia racemosa. 



Fig. 448. Flower. 



Lopezia racemosa. 



Fig. 447. Floriferous branch. Fig. 449 Diagram. 



accompanied by very small stipuliform and caducous scales ; 

 inhabit the south-west of North 

 America. The flowers are in 

 clusters at the extremities of 

 the branches. 



In Semeiandra grandiflora? a 

 Mexican species, the flowers are 

 those of a Lopezia, and also the 

 fruit ; but the stamens are united 

 with the base of the style in a 

 column adnate also with the an- 

 terior side of the floral receptacle. This character marks it as a 

 distinct section in the genus Lopezia.* 



they 



Fig. 450. Dehis- 

 cing fruit (\) . 



Fig. 451. 

 Seed. 



Fig. 452. 

 sect, of 



^ The seeds are often united two and two 

 (fig. 451) in a single mass. Their external 

 coat is rugose, granular. 



2 Jacq. Colled. Y. t. 15 ; Ic. liar. t. 203 ; 

 IJcloff. t. 109, 140.— BoNPL. Jard. Nav. t. 25.— 

 H. B. K. Nov. Gen, et Sp. vi. 95. — Schrank, 



Rort. Monac. t. 20.— Sot. Mag. t. 254, 4724.— 

 Walp. Rep. ii. 96 ; v. 670 ; Ann. iv. 682. 



3 Hook, and Arn. Beech. Toy. Bot. 291, t. 59. 

 — Endl. Gen. n. 6126.— -Bo^. Mag. t. 4727.— 

 Walp. Rep. v. 669. 



•* We can here only doubtfully place a Mexi- 



