764 . MALVACEAE 



cate at the apex: fruit 10-12 mm. broad: carpels shorter than the calyx -lobes, beaked: 

 seeds finely pilose. 



On dry prairies, Texas and adjacent Mexico. Spring to fall. 



7. Abutilon incanum (Link) Sweet. Perennial, felty or rather thinly pubescent. 

 Stems erect, 5-15 dm. tall, branched : leaves rather numerous : blades ovate, 2-10 cm. 

 long, acute, or the larger ones acuminate, dentate, cordate : petioles as long as the blades 

 or shorter : peduncles solitary in the axils : calyx not accrescent, reflexed at maturity ; 

 lobes triangular-lanceolate, acuminate, longer than the tube, finally reflexed : petals yel- 

 low, 6-10 mm. long : carpels 8-9 mm. high, naked, surmounting the calyx: seeds minutely 

 pubescent. 



In dry soil, Arkansas to Texas and Arizona. Also in adjacent Mexico. Spring and summer. 



8. Abutilon parvulum A. Gray. Perennial, more or less densely pubescent with 

 stellate hairs and often somewhat hirsute. Stems diffusely branched at the base ; branches 

 spreading or decumbent, 2-6 dm. long, simple or branching : leaves variable in size ; 

 blades ovate to suborbicular in outline, 1-5 cm. long, obtuse to acutish, dentate, and often 

 3-lobed, cordate ; petioles shorter than the blades : peduncles solitary, surpassing the sub- 

 tending leaves : calyx 2-4 mm. long ; lobes ovate, acuminate, ribbed, with the tube finally 

 reflexed : petals brick-red, 4-6 mm. long : carpels nearly 1 cm. high, with erect tips. 



In dry soil, Colorado to Texas and Arizona. Spring and summer. 



9. Abutilon Texeiise T. & G. Perennial, minutely but densely velvety tomentose. 

 Stems erect or ascending, 3-9 dm. tall, much branched : leaves numerous ; blades ovate 

 or ovate-lanceolate, 0.8-2 cm. long, obtuse or acutish, serrate, truncate to cordate at the 

 base, prominently nerved beneath ; petioles J as long as the blades or shorter : peduncles 

 longer than the subtending petioles : calyx campanulate, 4-5 mm. high ; lobes triangular 

 or triangular-ovate, about as long as the tube, acute : petals red, 7-10 mm. long : fruit ovate 

 or globose-ovoid, 6-8 mm. high : carpels with erect merely acute tips. 



In dry soil, Texas. Spring and summer. 



2. GAYOIDES Small. 



Perennial, often vine-like herbs, with pubescent foliage. Leaves alternate : blades 

 mostly broadest below the middle, commonly toothed, often crenate, cordate : petioles 

 commonly shorter than the blades. Flowers perfect, on more or less elongated axillary 

 peduncles. Involucel wanting. Sepals united below. Petals 5, distinct. Carpels nu- 

 merous, 1-celled. Styles slender. Stigmas terminal. Ovules 2-6 in each cavity. Carpels 

 membranous, bladder-like at maturity, rounded at the apex. Seeds 2-3 in each cavity. 



Calyx villous or hispidulous. 1. O. crispum. 



Calyx merely velvety. 2. G. imberbe. 



1. Gayoides crispum (L. ) Small. Velvety and more or less villous. Stems 

 branched at the base, the branches diffuse, 3-7 dm. long, with diverging or ascending 

 branchlets : leaf-blades ovate, 2-6 cm. long, acuminate, crenate, cordate, prominently 

 nerved beneath ; petioles usually less than % as long as the blades : peduncles slender, vari- 

 able in length : pedicels more or less strongly refracted : calyx villous ; lobes ovate to 

 triangular-lanceolate, acuminate, barely as long as the petals : petals yellow or whitish, 

 10-12 mm. long, obovate, or spatulate-obovate : fruit 1.5-2 cm. broad : carpels bladdery, 

 about 12, veiny, discolored: seeds glabrous. [Abutilon crispum (L. ) Medic.] 



In dry or sandy soil, Texas to Arizona and Mexico. Throughout the tropics. 



2. Gayoides imberbe (Griseb.) Small. Minutely velvety. Stems sometimes erect, 

 branched at the base, the branches vine-like, diffuse or trailing, 3-9 dm. long, divergently 

 branched : leaf-blades ovate, 1-5 cm. long, acute or rather obtuse, crenulate, cordate, ru- 

 gose beneath ; petioles much shorter than the blades or almost wanting : peduncles com- 

 monly as long as the subtending leaves or longer : pedicels finally bent at an angle : calyx 

 merely velvety, not villous ; lobes lanceolate to ovate-lanceolate, acuminate : petals yellow 

 or yellowish, orbicular-obovate : fruit 1.5-2 cm. thick : carpels bladdery, somewhat hispid 

 above : seeds glabrous. [Abutilon crispum var. imberbe Griseb. ] 



In sand, peninsular Florida and the Keys, Texas and New Mexico. Also throughout the tropics. 



3. WISSADULA Medic. 



Perennial upright herbs, resembling species of Abutilon. Leaves alternate : blades 

 broadest below the middle, entire or toothed. Flowers perfect, in terminal ample, or nar- 

 row panicles. Involucres wanting. Sepals 5, partially united. Petals 5, yellow or 

 whitish, distinct. Carpels 5, transversely 2-celled or sometimes imperfectly 2-celled or 



