Onagrariece Ga u ra. 



203 



from the disappearance of -the septa ; cells 1 -seeded. There 

 are about a dozen species, from the warmer parts of North 

 America. The name is derived from 

 yavpo*, elevated, probably from the petals 

 being directed upwards. 



1. G. Lindheimeri (fig. 110). This is 

 the only species in general cultivation. It 

 is a branching slender herbaceous species, 

 bearing its long spikes of white and pink 

 flowers in great abundance throughout 

 the Summer. 



ORDER XLYIII.-LOASE.aE. 



Erect or climbing herbs, destitute of 

 tendrils, or more rarely shrubs, frequently 

 clothed with hispid often stinging hairs. 

 Leaves opposite or alternate, entire, 

 lobed, pinnatifid or pinnate ; stipules 

 none. Flowers regular, hermaphrodite, 

 solitary, racemose, or cymose or capitate ; 

 peduncles often opposite the leaves ; 

 pedicels bibracteolate. Calyx-tube ad- 

 nate to the ovary, often ribbed and twist- 

 ed ; limb of 4 or 5 imbricated or contorted 

 persistent lobes. Petals 4 or 5, inserted 

 upon the throat of the calyx, sessile or 

 clawed, flat or hooded. Stamens usually 

 numerous, often in bundles opposite the 

 petals, occasionally with intervening Fi e- 110 \ i G n a a C ra sl ^ n f lieimeri * 

 filiform or petaloid staminodes. Capsule 



commonly 1 -celled, with straight or twisted ribs ; seeds 1 or 

 more, usually minute. Ten genera, containing about one 

 hundred species, belong to this order, and, with the exception 

 of one monotypic genus from tropical Africa, all are American. 



1. MENTZBLIA. 



(Including Bartbnia and Eucnide.) 



Herbs with alternate leaves. Flowers large, white or yellow. 

 Stamens very numerous. Petals flat. Capsule 1 -celled, straight; 



