WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 417 



Carjiels membranous, rounded at the 



apex 6. Gayoides (p. 419). 



Carpels leathery, usually acute or cus- 



I>idate 7. Abutilon (i>. 419). 



Calyx brae ted; seeds 1 to 3 iu each carpel. 

 Capsules hirsute as well as stellate- 

 pubescent, 2 or 3-seeded, smooth 



on the sides at the base 8. Phymosia (p. 420). 



Capsules stellate-pubescent but not hir- 

 sute, 2-seeded, more or less retic- 

 ulate at the base 9. Sphaeralcea (p. 420). 



Seeds solitary in each carpel. 

 Calyx bracteate. 



Flowers white; stems prostrate 10. Disella (p. 424). 



Flowers orange to pink; sterna erect 11. Malvastrum (p. 425). 



Calyx not bracted. 



Perennials; carpels erect, with con- 



nivent or erect tips 12. Sida (p. 425). 



Annuals; carpels depressed, the tips 

 spreading. 

 Carpels 9 to 20, hirsute; flowers ax- 

 illary 13. Anoda (p. 426). 



Carpels 5 to 9, not hirsute; inflores- 

 cence racemose or paniculate. 14. SiDANODA (p. 427). 



1. TRIONUM Medic. Flower-of-an-hour. 



More or less hispid annual, branching from the base, with palmately 3 to 5-lobed or 

 parted leaves and dull white flowers with an inflated nen-ed calyx; capsules ovoid, 

 about 15 mm. high, inclosed in the persistent calyx. 



1. Trionum trionum (L.) Woot. & Standi. 

 Eihisais trionum L. Sp. PI. 697. 1753. 

 Type locality: "Habitat in Italia, Africa." 

 New Mexico: Ramah; north of Kennedy; Las Vegas; Raton. 

 An introduced weed, occasionally found about gardens. 



2. HIBISCUS L. Rose mallow. 



Herbaceous perennials with large or small pubescent ovate leaves, and axillary pink 

 or purplish flowers; calyx of 5 more or less united sepals, subtended by several bracts 

 of about the same length. 



KEY to the species. 



Plants large. 1 meter high or more; flowers 6 to 8 cm. long 1. II. lasiocarjjus. 



Plants small, 40 cm. high or less; flowers 3 cm. long or less 2. H. involucellatus. 



1. Hibiscus lasiocai-pus Cav. Monad. Diss. 159. pi. 70./. 1. 1787. 

 Type locality: Not stated. 



Range: Low ground, New Mexico to Illinois, Georgia, and Louisiana. 

 New Mexico: Roswcll {Earlc 357). 



2. Hibiscus involucellatus (A. Gray) Woot. & Standi. 



Hibiscus denudatus involucellatus A. Gray, PI. Wright. 1: 22. 1852. 

 Type locality: "Sides of hills near El Paso." 

 Range: Western Texas to southern Arizona, south into Mexico. 

 New Mexico : Tortugas Mountain; Grant County. Dry hills, in the Lower Sonoran 

 Zone. 



52570°— 15 27 



