' 192 HYDROCHARIDE.E. IValimena. 



Mountains, Dr Richardson. DrummonrL — This is a well marked species, thougli allied to J. bufunius, and 

 it seems most abundant throughout N. America. The leaves are slender, setaceous, several from the root. 

 Stem from 8 inches to 2 feet, slender, but rigid, bare of leaves uj) to the panicle near the top, where is one 

 leaf immediately beneath the foliaceous bracteas. In the axils of the forks of the dichotomous panicle are 2 

 or 3 large nearly sessile flowers, and 2 or 3 unilateral ones, from the upper or inner side of the branches, the 

 under or outer side being bare of flowers. Sepals green, with white, membranous margins. 



12. J, castaneus (Sm.); caule erecto tereti folioso, foliis supra canaliculatis subtus 

 teretibus (siccitate planis), capitulis plurifloris subbinis sessilibus v. pedunculatis bracteis 

 majoribus foliaceis capitulis longioribus, floribus sessilibus v. petlicellatis, capsulis ovali- 

 trigonls sublonge mucronatis peiianthium superaniibus. £. BoL t. 90. Rich. App* p> 11. 

 Cham, etSchlecht, Linncea^ 3, />. 374. — a. floribus capsulisque intense fuscis. — /3. floribus 



r capsulisque pallidis — J, Lehmanni. E. Meyer in Herb, nostr. 



Hab. York Factory, Hudson's Bay ; Edmonton House Fort, on the Saskatchawan, to the Rocky Moun- 

 tains. Dj-ummond ; and to Bear Lake. 7)r Richardson, N. W. CoE^st, from Unalaschka to Kotzebue's 

 Sound. Chamisso. Beechey. 



13. J. Menziesii (Qwin Herb, Banks) ; caule erecto tereti folioso, foliis lineari-acu- 

 minatis supra canaliculatis, capitulis terminalibus globosis 1-3, bractea exteriori ple- 

 rumque foliacea et capitula superantibus, sepalis lato-ovatis obtusis capsulam obovatam 

 nitidam muticam asquantibus. 



Hab. N, W. Coast of America. Menzies, in Herb. Banks. Common near the confluence of the Colum- 

 bia, and thence to Puget Sound. Douglas. — A span to nearly a foot high, the stem rigid, the leaves slightly 

 so. Heads of flowers generally too large. Sepals unusually broad. — A very distinct species, with the habit 

 of the preceding. '%^i) 



14. t7. biglumis (L.) ; foliis radicalibus lineari-subulatis compressis (non canaliculatis) 

 basi in vaginam sensim dilatatis, capitulo terminali bifloro flore altero pedicellato ple- 

 rumque involucro foliaceo breviore, capsula tui'binata retusa sepalis obtusis longiori. 

 E, Bot t 898, Cham, et Schlecht LinrKEOy 3. p. 374, 



Hab. Arctic Sea-coast and Islands. Z>r Richardson. Sir E. Parry. Mr Edwards. ' Rocky Mountains, 

 north of the Smoking River. Brummond. Bay of Good Hope, Behring's Straits. Chamisso. 



15. J, triglumis (L.) ; foliis radicalibus lineari-subulatis canaliculatis bitubulosis vaginis 

 supra auriculatis, capitulo terminali 3-floro bracteam membranaceam aequantibus, capsula 

 elliptica acuta sepalis obtusis longiori. E. BoL t, 148. 



Hab. Arctic Sea-coast. Dr Richwdson. Alpine swamps in the Rocky Mountains. Drummond. 



Ord. XIV. HYDROCHARIDE^. Br. 



I. VALISNERIA. Z. 



r 



1. V. spiralis. L. — V. Americana. Mx Ph. Am, \.p. 602. 



Hab. Canada. — Living plants were sent from near Montreal, by Mr Kippin, to the Glasgow Botanic 

 Garden, where we had the opportunity of examining flowering specimens, and ascertaining that they were 

 the same as the European species. 



