CALTROP FAMILY 41 



b. Petals 2 times linger, fruit hardly longer, than 



the sepals L. usitatissimum 



2. Flowers yellow ; plant glabrous or finely hairy L. rigid urn 



ZYGOPHYLLACEAE CALTROP FAMILY 



Sepals 5, petals 5, stamens 10, ovary 5-12-celled, style 1, fruit splitting 

 into 5-12 nut-like divisions; flowers solitary; herbs or shrubs with opposite 

 compound leaves. 



1. Leaflets 2; shrub Covillea 



2. Leaflets 6-10; herb Kallstroemia 



Covillea Vail 1895 Creosote Bush 



( Xamed for the American botanist. Coville) 



PI. 4, fig. 7. 



(Xarrea Mor.) 



Sepals 5, petals 5. yellow, stamens 10, ovary 5-celled, style 1. fruit 

 long-hairy, splitting into 5 nut-like divisions ; flowers solitary ; leaves of 2 

 leaflets, evergreen, heavy-scented; shrubs. 

 Branched shrub 3-10 ft. high; leaflets unequal, oblong, 



curved C.tridentdta 



Kallstroemia' Scopoli 1777 Caltrop 

 (Named for Kallstroem) 



Sepals 5, petals 5, yellow, deciduous, stamens 10, ovary 10-12-celled. 

 style 1. fruit splitting into 10-12 divisions: flowers solitary: leaves pinnate, 

 of 6-10 leaflets; annual. 

 Plants spreading, hairy. 3-15 in. high: fruit beaked 



warted K. maxima 



CISTALES ROCKROSE ORDER 

 CISTACEAE ROCKROSE FAMILY 



Sepals 3-5. unequal, petals 5, 3 or none, yellow, stamens many, ovary 

 1-several-celled. style 1, stigma 1. sometimes 3-lobed. fruit a capsule; flow- 

 ers of two sorts, petal-bearing and petal-less, in racemes or panicles ; woody 

 herbs with alternate simple entire leaves. 



