S6< DISTINCTIONS BETWEEN 



Corolla. Its author nevertheless seems of 

 opinion that no absolute means of distinction 

 between these two parts can be pointed out, 

 except colour ; of the insufficiency of ^vhich 

 he is aware. If hovi^ever the Corolla performs 

 functions with respect to light which the Calyx 

 does not, and those functions are indicated 

 by its colour, a distinction founded on such 

 a principle is both correct and philosophical. 

 V/e must then conclude that mmoat liliaceous 

 plants, not in all, the two organs are united 

 into one, and indeed the outside is often 

 green and coarse like a Calyx, the inner co«. 

 loured and delicate ; witness Ornithogalum^ 

 t. 21, 130 and 499, Narthecium, t. 535, &c. 

 Linnaeus has the same idea respecting Daphne^ 

 t. 119 and 1381, and the analogy is con- 

 firmed by Gnidia, which is a Daphne with 

 petals. In Trollk/s, t. 28, and Helkhoriis^ 

 i. 200 and 613, Linneeus considers as petals 

 what Jussieu, following Vaillant, thinks a 

 Calyx. Of these plants we shall soon have 

 occasion to speak again. 



I cannot but consider as a sort of Corolla 

 the Cahjptra or Veil of Mosses, which Lin- 

 naeus reckoned a Calyx. Schreber, very 

 deep and critical in his inquiries concerning 



