132 MALVACEAE 



2. CALLIRRHOE Nutt. Poppy Mallow. 



Involuoel bracts three or none. Styles and stigmas as In Malva. 



Involuoel bracts none. 1. C. alceoides. 



Involuoel bracts three. 2. C. involucraia. 



1. C. alceoides (Michx.) Gray. 1° high, erect : leaves triangnlar- 

 heart-shaped, 5-7-lobed, the divisions linear to ovate, toothed : flowers 

 light pink, 1' broad. — Occurs rarely as a waif at SheflSeld. May-June. 



2. C. involucrata (T. & G.) Gray. l°-3° long, spreading: leaves or- 

 bicular, palmately lobed, the lobes cleft and toothed : flowers reddish, 

 purple, l'-2' broad. — Earely occurs as a waif near Sheffield and Green- 

 wood. June-August. 



3. MALVASTRUM A. Gray. 



Stamen column anther-bearing at summit. Stigmas capitate. Seeds 

 ascending. 



1. M. angustum A. Gray. Ybllow Mallow. Annual, 6'-20' high, 

 appressed-pubescent : leaves oblong-lanceolate, dent-ate : flowers axillary : 

 braotlets setaceous : petals small : sepals enlarging in fruit. — Often com- 

 mon in barrens, especially in the southern part. June-September. 



4. SIDA L. 



Differs from Malvastrum chiefly in having pendulous seeds. 



1. S. spinosa L. Pkickly Mallow. Annual, l°-2° high : leaves 

 ovate-lanceolate, serrate, bearing 2 or 3 small tubercles at the base of the 

 slender petiole : flowers axillary, 2"-V broad. — Abundant in open 

 grounds. July-October. 



5. ABUTILON L. 



Involucels none. Stamen column anther-bearing at apex. Stigmas 

 capitate. 



1. A. Avicennae Gaertn. Vblvbt Leap. Annual, 2°-6° high, vel- 

 vety-pubescent : leaves cordate, acuminate, loug-petioled, crennlate : 

 flowers yellow, axillary, 6" broad. — A common weed in waste places. 

 June-October. 



6. HIBISCUS L. 



Involuoel braotlets numerous. Stamen column anther-bearing for much 

 of its length. Stigmas capitate. Ovary 5-celled. 



Glabrous perennial. 1. S. ndlitaris. 



Hairy annual. 2. ff. Trionum. 



1. H. militaris Cav. Eosk Mallow. Bushy, 3°-8'' high : leaves tri- 

 angular in outline, strongly 3-parted, toothed : flowers pinkish, 3'-5' 

 broad. — Locally common in swamps near Sibley, Atherton and Leeds. 

 June-September. 



2. H. Trionum L. FLOWEE-or-AN-HouE. l°-2° high : leaves 3-7- 

 lobed, the lobes toothed and cleft : flowers yellow with a black center : 



