218 L YTHR ARlEiE. {Lythruin. 



foundland lias almost setaceous leaves, and seems ouly to differ from ReichenbacVs representation of the 

 following species by its stouter stem. Dr. Richardson's specimens accord in every particular with those of 



Europe. 



2. H, niontana; tenella, folils senis linearibus acutis. Eeichenb, Icon. Bot v. 1. p. 71. 

 t 86. f, 184. Cham, et Schlecht in Linncea, v, 4. p, SOT. De Cand. Prodr, v, 3. p. 71. 



Hab. Turfy places, XJnalaschka. EscJischoltz, Chamisso. — This is described and figured as having a 

 stem so slender, that the plant has almost the habit of Galium. 



3. H. maritima; foliis quaternis senisve lanceolatis obtusis apice vix sphacelatis. " Hellen. 



T 



Diss, cum Icr FL Dan, t, 1261. Reichenb, Icon, Bot v, 1. p, 71. t, 86. /. 182. De Cand, 

 Prodr, V, 3. p. 72. — H. tetraphylla. Linn, JiL SuppL p, 81. Rich, in Frank!, \st Joiirn, 

 ed, 2. App. p, 2. — H. lanceolata. Betz, Obs, fasc, 3. p, '7, t 1. 



Hab. Hudson's Bay? Sherard^s Herb. (v. Purshy FL v. 2. p. 74't.) Mouth of Hayes's River, near 

 York Factory, lat, 57°. Dr. Richardson, Drummond. Labrador. Dr. Morrison. Straits of Schismareff, 

 and Bay of EschschoUz. Chamisso. Kotzebue*s Sound. Lay and Collie. — Not only are the leaves of this 

 species much broader than in H. vulgaris; but, as Mr. Brown observes (in Richardson, App. 1. c), their ex- 

 tremities are not sphacelated, or they are so only in a very slight degree. The specimens from Hudson's 

 Bay are a foot and a half tall, bearing leaves more than an inch long ; while that from Labrador does not 

 exceed a span in height, with leaves one-third of an inch long. 



Ord. XXXII. CERAarOPHYLLE^. Graij. 



Flares monoici. Calyx {sen perigonium) liber multi- (10-12-) partitus, lobis aequalibus. 

 Petala 0. — Masc. Stam, 12-20, filamentis nullis, antheris ovato-oblongis bilocularibiis 

 apice 2-3-cuspi(latis sessilibus in centro calycis congestis. — Fceai. Ovarium liberum ovatum 

 l-loculare. Stylus filiformis incurvus obllquus. Stigma simplex. Nux 1-locul. l-sperma 

 stylo apiculata indehiscens. ^emen ex apice pendulum. Albumen 0. Embryo rectus, 

 radicula supera, cotyledonibus 4 verticillatis duabus latioribus oppositis, plumula valde com- 

 posita (ex Rich. Anal. Fr. p. 46 et 93.) — Herbae aquaticm submersm. Folia verticillata, 

 rigidula^ in lobos filiformes acutos divisa^ secus lobos subserrata, DC, 



\. CERATOPHYLLTJM. Linn, 



Character idem ac Ordiiiis. 



1. C, demersum? nuce trispinosa nempe 1 terminali et 2 lateralibus inasqualibus. DC, 

 Linn, Sp, PL p. 1409. Engl, Bot, t 946. Pursh, Fl, Am. v, 2. />. 370. 



Hab. In streams, Canada. iV/r. Cleghorn. Near the Saskatchawan. Dr. Richardson^ Drummond. 



This being destitute of fructification, I am unable to say whether it should be referred to C. demersum or 

 C. suhmersuni. 



OuD. XXXIII. LYTHRARIEiE. Juss, 



Trie. I. SALicAUiEiE. DC. 



L LYTHRUM. Jnss. 



Calyx cylindricus striatus apice dentatus, dentibus 4-6 latioribus erectis, sinubus 4-6 

 alternis subulatis saepe corniformibus interdum non productis, aut minimis. Petala 4-6 ex 



