DICOTYLEDONS. 147 



IV. SIDA. 



Annual or perennial herbs ; stem brandling, erect or decum- 

 bent; leaves mostly undivided; involucel none; flowers small, 

 axillary; calyx angular; anthers at tlie top of the column ; 

 styles 5-15; carpels as many as the styles, mostly 2-valved 

 and 2-beaked, separating from each other at maturity, seed 

 3-angied. 



1. S. SPINOSA L, Pkickly Sida. Annual; stem erect, widely 

 branclied above, 12-18 in. high; leaves petioled, ovate or oblong, 

 usually acute at the apex and rounded at the base, serrate, slightly 

 Itubescent, lower leaves often cordate; petiole oiten with a tubercu- 

 lar spine at the base; stipules slender, half the length of the petiole; 

 il(jwers single or clustered, yellow, ^ in. wide; peduncles shorter 

 than the petioles; carpels faintly reticulated. June-Septend)er. 

 Common in waste places. 



2. 8. P^LLiOTTii T. & G. Elliott's Sida. Perennial; stem 

 erect, slender, with straight branches, rough, 1-4 ft. high; leaves on 

 short petioles, linear- o))long or elliptical, serrate, nearly smooth; 

 stipules setaceous; flowers axillary, yellow. ;^-l in. broad; pedun- 

 cles longer than the i)etioles ; carjuds slightly beaked, strongly reticu- 

 lat<Ml. June-October. Open woods. 



V. ABUTILON. 



Herbs or shrubs; stem erect, brauchcd, usually softly 

 l)ubescent; leaves long-petioled, cordate or angled; involucel 

 none ; flowers axillary; anthers at the top of the tube; ova- 

 ries 5 or mor(\ 1-celled, several-seeded ; carpels 2-valved, 

 2-l)e;ik('(l, finally separating from each other and from the 

 central axis. 



1. A. AiuTTiLox (L.) Rusl)y. Vklvkt Lkaf. Annual; stem 

 eicci, l)ranclied ahove, velvet y-pid)escent, 2-5 ft. high; leaves c«>r- 

 (latf, acuniiiuite at the ajx'x, dentate or nearly entire, the blade 

 ahout as long as tlie ]>etiole; ])eduncles axillary, sliorter than the 

 petioles, l-Ij-Howered; flowt-rs yellow ; carpt'ls 12-1 '), strongly spinose- 

 beaked, i>ubescent, somewhat inflated, ij-seeded. May-September. 

 Introduced from C'hiiui. Comiuoii in fields and waste ])hu'es. 



2. A.stkiattmL. Aiutilox. An erect or spreading shruh 1-1 

 ft. high; Iraves long-]»etiole<l, angulate-lobed, aeuniiiuite at the apex, 

 cienatc, smooth on both sides; pedinicles longer than the jn'tioles; 



