Luzula.'] ♦ JUNCE^. 



187 



flowers, shorter limb, larger bracteas, and bifid scales at the mouth of the flower, readily distinguish tliis 

 species from B. grandiflora, the only ones found in N. W. America. 



Ord. XL PONTEDERIACE^. Kunth. 



1. PONTEDERIA. Z. 



L P, cordata, L.—BoL Mag. t 1156. Ph. Am. \. p. 223. 



Hab. Canada. Ph. From Lake Huron {Dr Todd), to the Saskatcbawan. Dr Richardson. Brum- 

 mond, 



2. LEPTANTHUS. Mx. 



Spatha unifloia. Perianthium coloratum inferum, tubo longissimo gracili, limbo 

 6-partito aequali. Stylus apice incrassatus, Capsula unilocularis, trivalvis, polysperma. 

 Semina receptaculis tribus filiformibus valvarum medio affixis inserta — Herba aquatica, 

 foliis altemis gramimis stipulalis^ floribus solitariis axillaribus. 



L L. gramineus. Mx. Am. 1, p. 25, t. 5. /. 2. Hook. Ex. Fl. a 1. /?. 94. t 94 Heter- 



anthers. VahU—Ph. Am. L p. 32. — Schollera graminifolia. Willd. — Commelina dubia. 

 Jacq. Obs. Bot. v, 3. p. 9. ^, 39. 



Hab. Canada, growing with Valisneria and Najas, sent thence by Mr Kippin to the Glasgow Botanic 

 Garden, 



Ord. XIL RESTIACE.E. Br. 



1. ERIOCAULON. X. 



1. E. septangulare. With, {anno 1801). E. Bot. t. 733. Hook. Fl. Land, N. S. t. 52. — 

 E. pellucidum. Mich. Am, 2. p. 166 {anno 1803). 



Hab. Canada. Michauz. Mrs Sheppard; and to the Saskatchawan. Dr Richardson. Drummond. 

 Newfoundland, l>r Morrison. — It is quite certain that this northern Eriocaulon of the New World, is the 

 same as that found in the lakes of Scotland and Ireland in the Old World ; the oldest name, therefore, must 

 have the preference. 



Ord. XIIL JUNCE^. Juss. 



1. LUZULA. DC. 



1. L, melanocarpa (Desv. Journ. t. 5. f. 2) ; caule elongate, foliis latis glabris, corymbo 

 decomposito, pedunculis elongatis ramis 3-5 floris pedicellis unifloris, sepalis ovatis acu- 

 tissimis capsula ovali-trigona obtuse mucronata longioribus. Torr. Am* 1. p. 366. 



