Sagittaria,-] ■ ALISMACE^. 



167 



exceha of Pursh ; but that it is the X excelsa of Bieberstein, from Tauria, is a question ; and indeed the latter 

 author himself says of his plant, "diagnosis a J, Sabina difficillima, quamvis specie omnino diflFerat," From 

 J, Sabina our present species may be readily known by the more spreading branches and branchlets, and by 

 both being perfectly terete, by the rounder and more convex leaves, and, above all, by the large gland on 

 «very leaf, constantly exuding a transparent resin, which concretes in drops upon the foliage. There are no 

 acerose leaves on the older branches whatever, but the old leaves form lozenge-shaped scales or tubercles, with 

 the resmous gland still very conspicuous. 



TAXUS. L, 



1. r, haccata. L.—E. BoL t 746. Nutt. Gen. Am. p. 946.-/3. minor. Mich. Am. 2. 

 p. 245.— T. Canadensis. Willd.—Ph. Am. 2. p. 647. Nutt. 



Hab. Lake Huron. Nuttall Mountainous parts of N. W. America. Douglas. Dr Scoider,—{l. Canada, 

 to the Saskatciiawan. Dr Richardson. Drummond. Newfoundland. Mr Cormach Miss Brenton,~-ln 

 the eastern parts, the Yew seems to form a low shrub ; but on the Columbia, Mr Douglas assures us, it 

 attains a size fully equal to that of Europe. As was the case with our ancestors, the Indians make their 

 bows of its wood. 



Cl. II. MONOCOTYLEDONE^ 



t 



Ord. I. COMMELINE^. Br. 



1. TRADESCANTIA. Z. 



]. T. Virginica. L.—Curt. Bot. Mag. t. 105. Ph. Am. 1./?. 218. 



Hab. Upper Canada? Mrs Sheppard. 



Ord. 11. ALISMACE^. Br. 



m 



1. SAGITTARIA. L. 



I. S. sagittifolia. L.— Ph. Am. 2. p. 396.— yar. I. vulgaris ; foliis mediocribus sagittce- 

 formibus — var. 2. macrophylla; foliis fere pedalibus lobis lanceolatis decurvis. S. lati- 

 folia. Ph. S- sagittifolia. E. Bot. t. 84 — var. 3. angustifolia ; foliis elongatis angustis 

 lobis linearibus patentibus longissimis, foliis exterioribus saepe indivisis. S. sagittifolia, 

 7ninor; S. hastata; S. gracilis; and S. heterophylla. PA.— var. 4. simplex; foliis omni- 

 bus lineari-lanceolatis simplicibus. S. simplex; S. graminea; and S. acutifolia. Ph. 



Hab. Ditches and pools, and throughout Canada to the Saskatchawan ; Columbia, and Walla-wallah Rivers. 

 Dr Gairdner. Mr Tolmie.—var. 2. N. W. coast, where it is called by the Chenooks Wapatoo, and where 

 the roots are eaten. Dr Scoukr.—var. 3. Canada. Mrs Sheppard. Drummond.— var. 4. Newfoundland. 

 Miss JBren^on.— Nothings can be more variable than the leaves of this plant in N. America, and they are of 

 all sizes. 



