48 BOTANICAL BULLETIX. 



present article is not only to correct this mistake bat to direct the attention of all 

 botanists, especially those near the seaboard, to tlie si)ecies of Acnida. The request 

 is made that specimens be critically examined wliile fresh and that dried speci- 

 mens, especiallj' in good fruit, also be prepared and sent to the writer. The so- 

 called Montelia tamnrtscinn has been found this summer growing in gi-eat profu- 

 sion upon tne banks of the Ohio river and both fertile and sterile plants were 

 easily obtained, althougli tlie former is much later in getting itself ready for a 

 good herbarium specimen. Although the species of most interest are not found 

 here, the material that we have is being carefully watched. I wish to reproduce 

 here Dr. Gray's proposed rearrangement of the genus Acnidn, both to assist 

 botanists in their search for the material requested, and because it makes some 

 important changes in a puzzling family. 



AcxiDA (Acnide Mitchell) Linn. 



(1.) EuACNiDE. Utricle somewliat lleshy, indeliiscent, lai-ge, ;'. e., one and a 

 half to two lines long. 



A. RHYssoCARPA, alias rusocakpa Miehx. Fertile inflorescence very naked; 

 the bracts not half the length of the fleshy utricle, the angles of whicli are not 

 rarely rugose-tuberculated ; stigmas comparatively short and slender-subulate. 

 Salt marshes, New England to Georgia. 



A. cannabina L. Fertile inflorescence slender or sometimes glomerate; utricle 

 thinner and smaller, with acute and smooth angles, mucli exceeding the bracts; 

 stigmas very long and filiform, almost plumosely hairy. Salt marshes and river- 

 banks even beyond brackish water, Xew England to Georgia, West Indies (?), etc. 



A. austkalis, n. sp. (^4. cannabina Chapman, S. Floi-a.) Fanicled spikes of the 

 fertile inflorescence dense, linear-cylindrical; utricle smootli, thin, liardlj' at all 

 fleshy, acute-angled, little if at all exceeding the imbricated bracts; stigmas seta- 

 ceous, rather short. Florida, at Apalachicola, Dr. Chipman; Biscayan Bay, Di-, 

 Palmer, coll. no. 462. 



(2.) Montelia Moquin-Tandon. Utricle thin and small (half to two-thirds 

 of a line long), punctate-rugose or roughish, indehiscent, equaled or exceeded by 

 the cuspidate-tipped bracts; stigmas slender, filiform, almost plumosely hairy. 



A.tuberculata Moquin-Tandon, in DC.Prodr. A. nisocarpa Moquin-Tandon, 

 1. c, not of Michx. A. cannabina var. concatenata Moquin-Tandon, 1. c. Amafan- 

 tus Miamensis Riddell, synopsis. Montelia tamariscina Gray, Man., Bot. ed. 2, 370, 

 and ed. 5, 413, partly, especially the var. concatenata. River-banks, siiores, etc., in 

 the interior. Lake Champlain to Iowa and Texas. Sometimes erect, and from 

 one to four feet high, sometimes spreading or j^rostrate in sandy or gravelly soil. 



(3.) Pyxidi-Montelia. Utricle thin and small, shorter than the cuspidate- 

 tipped bracts, circumscissile in the manner of true Amarantns ; fertile inflorescence 

 in slender virgate paniculate spikes, less glomerate than in tlie preceding; stigmas 

 similar or shorter. 



A. tamariscina. Amarantns tumariscitia Nutt., in Ti-ans. Am. Phil. Soc, n. 

 ser., V. 165. Montelia tamariscina Gray, 1. c, in part. Ai-kansas to Texas and 

 New Mexico. — Ed. 



Some new Roadside plants. — It is always interesting to watch the river banks 

 and roadsides, for new species are very apt to be found in such localities. This 

 season several species new to our county flora were found along the roadsides, and 

 they were all on their way from the western plains to the east. Last year a very 

 small patch of Artemisia biennis was noted, and this year a road southwest of the 

 town is lined with thousands of specimens. Euphorbia marginata has come in the 

 same way, until now it is quite at home. Erigeron divaricattim was found this year 

 for the first time and it was evidently a late arrival. It was quite abundant, grow- 

 ing with Verbena bracteosa and V, officinalis. At a hasty glance it is very apt to be 

 passed by for depauperate forms of E. Ganadense, and probably has been passed by 

 in that very way, but when once intelligentlj^ seen is very readily distinguished, 

 even in riding by. — Ed. 



