ZYGOPHYLLACE^. 119 



Plate 117. 



LARREA, Cav. 



Calyx 5-sepalus deciduus. Stamina 10 ; filamentis squa- 

 ma 2-fida auctis. Ovarium breviter stipitatum, 5-loculare ; 

 loculis 5- 6-ovulatis. Fructus tomentosus, profunde 5-lobus, 

 in nuces 5 evalves secedens. Serainis testa tenuissima. Em- 

 bryo in albumine corneo rectiusculus : cotyledones angusto- 

 oblongas, raphi axique parallelae. — Frutices humiles ; foliis 

 resinosis pinnatisectis vel 2-lobis ; floribus solitariis luteis, 



Larrea, Cav. in Ann. Cienc. Nat. 2. p. 119. t. 18, 19, & Ic. 6. p. 36. t. 

 559, 560. DC. Prodr. 1. p. 705. Adr. Juss. in Mem. Mus. 12. 

 p. 456. 1. 15. f. 5. Endl. Gen. 6038. Moricand, PI. Nouv. Amer. 

 t. 48. Torr. in Emory, Rep. p. 138. t. 3. 



Oobcrnadora. Creosotc-pIant. 



Calyx of five ovate or obovate and somewhat unequal 

 SEPALS, scarcely united at the base, quincuncially imbricated 

 in asstivation, deciduous. Petals 5, obovate or lanceolate- 

 spatulate, hypogynous, more or less unguiculate, quincun- 

 cially imbricated in asstivation, longer than the calyx, decid- 

 uous. Stamens 10, hypogynous, inserted at the base of a 

 small somewhat ten-lobed disk, nearly equal, five of them 

 opposite and five alternate with the petals : filaments fili- 

 form, connate below with the outside of a two-cleft and 

 sometimes laciniate-toothed membranaceous scale : anthers 

 cordate-oblong, fixed above the base, introrse, two-celled, the 

 cells opening longitudinally. Pistil of five united carpels : 

 ovary somewhat stipitate, globular, hairy, five-celled; the 

 cells alternate with the petals : styles united, sometimes 

 separable at maturity : stigmas 5, minute. Ovules usually 

 6 in each cell, pendulous in pairs from its inner angle, anatro- 

 pous, but the slender raicropylar extremity produced upwards 

 beyond the attachment of the funiculus ; the raphe ventral. 



