APETALOUS EXOGENOUS PLANTS. 485 



whitish ; branches stellate-pubescent, roiighish ; leaves slen- 

 der-petioled, ovate, acute, crenulate, sprinkled with rigid 

 stellate hairs, hoary when young; spikes woolly, at length 

 elongated ; sterile flowers numerous, the fertile ones few ; 

 calyx of the sterile flower 5-parted, longer than the woolly- 

 margined petals ; style twice 2-parted, the divisions long, 

 filiform ; stamens about 15 ; capsule much longer than the 

 calyx ; seed ovoid, smooth. — Shrub l°-2° high ; leaves thin, 

 l'-l|-' long. Prairies around Houston. 



C. ARGYRANTHEMUM, Michx. Herbaceous,'peYenmiii, COY- 

 ered throughout with stellate silvery scales ; stem erect, um- 

 bellately branched ; leaves obovate or oblong, obtuse, entire, 

 silvery beneath, narrowed into a petiole ; racemes sessile, 

 oblong, obtuse ; the fertile flowers numerous and crowded ; 

 calyx 5-G-parted, with the lobes acute; stamens 10-12, 

 hairy ; styles long and slender, 4-cleft at the apex ; capsule 

 much longer than the calyx. Dry sandy pine-barrens. 



C. LiXDHEiMERi, Eng. and Gray. Shriibby, erect, tri- 

 chotomonsly branched, clothed with a dense hoary tomen- 

 tnm ; leaves oblong-lanceolate, rounded or subcordate at 

 the base, acute, entire; louver petiole elongated; spiJces ter- 

 minal and in the forks, mixed or separate; sterile floivers 

 many, sessile, fertile larger, 2 or 3 at the base or alone ; 

 calyx very woolly ; 'pistillate flowers 7 or 8-parted; styles 3, 

 twice or thrice forked, red ; ovary very villous ; pistillate 

 flowers a mass of rusty wool, 5" broad. — Shrub 2°-4° high ; 

 leaves 2-3' long. 



*** styles 2, 2-parted; stigmas 4; petals 5 in the sterile flowers, none in the fertile; 

 stamens 5-10 ; capsule 1-2-celled. 



C. MOXAXTHOGYNUM, Miclix. Annual ; stem erect, twice 

 or thrice umbellately branched, the spreading forking 

 branches, like the leaves and racemes, stellate-tomentose ; 

 leaves on slender petioles, ovate or oblong, entire, obtuse, 

 whitish beneath ; racemes in the forks of the branches, 

 few-flowered; the sterile flowers corymbose; the fertile 



