BlUPIPr^PEClES OF DROSERA. X05 



it does not destroy the stem, this will contract, ^rid will 

 loBg after show the sockets empty. — I have added a figure 

 pf the dissection of the stem taken froni a larjjje plant of 

 the pliaseolu!* coccmea: see Pl. IV, fi^. 1. 1 conid mention 

 many more proofs of curious inward structure, but shall 

 confine mystU to the different forruation of tl)e corolla, 

 from which most part of what is called the hahit of a plant 

 proceeds. There are various specie^j, divcrsijied by their 

 iix&itvani formationy well worlh a letter to show it^ and'^Bs I 

 nieap in my next to give a complete sketch of the iutevior 

 formation of corollas in general, 1 will not anticipate the 

 suiyect. 



■ tn vi-Y 



IV 



Remarks on tlir British Species of Drosera, jBy JloBERT 

 I^YALL, Surgeon, Memhier of the Royal Physical Society 

 at JEdinburgh, and Corresponding Member of the Literary 

 and Philosophical Society at Manchester. Communicated 

 by the Author, 



-M-N 'Consequence of the contrary opinions of celebrated British species 



botanists, and of the slight variations to vvhjch the plants °^ .?'^"^*^''* "?"* 



are liable, much ambij^uity has been induced respecting ed. 



our indigenous species of drosera. .It is the object of the ^ j 



foliowino; remarks, to show by definite, ciiar^acters what 



sihonld be reckoned distinct British species of this geuu^of 



plants. >. . 



As there can be no dispute, .with regard to the d. lotun- 

 difolia, I proceed immediately to speak of the d, lougi- 

 folia. 



Linneas questioned whether the d. iongifolia was u dis- Linneus had 

 tinct species, or merely a variety o^'" M^^- <^- *'otundifolia ; j"")j,\gi"|^li^^^^^ 

 apd ScQpoli states, that the d. rotund. ^^id,lougif,T^ij<iJ.opiy c 

 varieties: of the same plant, and thatjje Uas various speci- is merely a 

 mens, which show the gradation from the one to the other, ^^""^^y* 



Mailer^ on the contrary, will not allow, that these plants ^ .. ^ 



71 1 ; ,f .^- . ; . , ' . ,i ■' ^r • Considered as 



are merely varieties : mdeed he considers them as distinct a species by 



• . ^ species ;"^"'^^> 



