AMARANTHACEAE. 



VOL. II. 



i. Acnida cannabina L. Salt-marsh Water- 

 hemp. Fig. 1670. 



Acnida cannabina L. Sp. PI. 1027. 1753. 



A. rusocarpa Michx. Fl. Bor. Am. 2 : 234, pi, 50. 1803. 



Succulent, stem stout or slender (sometimes i' in 

 diameter at the base), usually much branched, i-io 

 tall, the branches ascending. Leaves lanceolate, acumi- 

 nate but generally ^blunt-pointed and apiculate at the 

 apex, 2'-6' long, i'-ii' wide, narrowed at the base, 

 entire or slightly undulate; petiole usually shorter than 

 the blade; staminate spikes i'-s' long, usually dense; 

 sepals oblong-lanceolate or ovate-oblong, acute, acumi- 

 nate or obtusish, cuspidate or mucronate ; fertile spikes 

 dense or loose; stigmas slender, papillose-hispid, \" 

 long; utricle fleshy, indehiscent, 3-s-anglcd, subglobose 

 or obovoid, i"-2" long when mature, becoming black, 

 much longer than the bracts. 



In salt and brackish marshes, and up the rivers to fresh 

 water, New Hampshire to Florida. Water-leaf. July-Aug. 

 Acnida floridana S. Wats. Proc. Am. Acad. 10 : 376, a more slender plant, of the southern 

 Atlantic coast, with narrower slender-petioled leaves, the flowers in elongated interrupted spikes, 

 and a smaller utricle, may occur in southern Virginia. 



2. Acnida tamariscina (Xutt.) Wood. Western 

 Water-hemp. Fig. 1671. 



Amarantus tamariscinus Nutt. Trans. Am. Phil. Soc. (II.) 



5: 165. 1833-37. 

 Acnida tamariscina Wood, Bot. & Fl. 289. 1873. 



Similar to the preceding species, much branched, 

 erect, the branches usually slender, erect-ascending. 

 Leaves lanceolate or ovate-lanceolate, 2'-6' long, mostly 

 long-acuminate, but sometimes obtuse at the apex and 

 mucronate or cuspidate-tipped, narrowed at the base, 

 the petioles commonly shorter than the blades; spikes 

 mostly loose or interrupted, often 5' long; sepals lance- 

 olate, subulate-acuminate; stigmas plumose, rather 

 short; utricle membranous, not angled, \"-\" long, cir- 

 cumscissile; bractlets lanceolate, cuspidate. 



In swamps, Illinois to South Dakota, Texas and New 

 Mexico. July-Sept. 



3. Acnida tuberculata Moq. Rough-fruited 

 Water-hemp. Fig. 1672. 



A. tuberculata Moq. in DC. Prodr. is 2 : 278. 1849. 



A. tamariscina subnuda S. Wats, in A. Gray, Man. Ed. 6 



429. 1890. 

 A. tamariscina concatenata Uline & Bray Bot. Gaz. 20 : 



158. 1895. 

 A. tamariscina prostrata Uline & Bray Bot Gaz 20- 



158. 1895. 



Erect ascending or prostrate, sometimes 10 high, 

 the branches flexuous. Leaves lanceolate to rhombic- 

 spatulate, acute or obtuse, 6' long or less; inflores- 

 cence spicate, or glomerate in the axils ; utricle ovoid, 

 often tubercled, irregularly dehiscent, about i" long. 



Swamps and river shores, Quebec to North Dakota, 



h to Kentucky, Louisiana and Missouri. Consists of 



1 races, differing in size and habit. July-Sept. 



nrfl arggntea L " a tal1 glabrous herb with white 

 OT pink flowers subtended by a bract and bractlets in a 

 'ng dense spike, having 5 sepals, filaments adnate at 

 ise,_ and the ovary with several ovules, widely dis- 

 SrV m tr P' Cal r eR-ons, has been found as a waif in 

 Montgomery County, Pennsylvania. 



