230 OF THE CAUDA, ROSTRUM, ETC. 



the Cotton plant, and Blandfordia iiobilis^ E.rot, 

 Bot, t, 4. 



Cduda^f. 205, a Tail, is an elongated, generally 

 feathery, appendage to some Seeds, formed of the 

 permanent style, as in Clematis, Engl. Bot. t. 612, 

 Dryas, 2^. 451, Geum, t, 1400. 



Rostrum, a Beak, mostly applies to some elonga- 

 tion of a Seed-vessel, originating likewise from the 

 permanent style, as in Geranium, t. ^Xl^^Hellehorus, 

 t. 200, though it is also used for naked seeds, as 

 Scandiv.f, W6,t, 1397. 



Ala, f. 207, a Wing, is a dilated membranous 

 appendage to Seeds, as in Emhothrium, Bot. of 

 N. Holl. t. 7. Bajiksia, Cojichium, Bignoiiia echi- 

 nata, Gcertn. t. 52, Rhinanthus, Engl, Bot. t. 657, 

 serving to waft them along in the air. Gaertner 

 wished to confine this term to a membranous ex- 

 pansion of the top or upper edge of a Seed or Seed- 

 vessel, using jjiargo membranaceus for one that 

 surrounds the whole, but he has not adhered to it 

 in practice. Capsules are sometimes furnished with 

 one wing, as the Ash, oftener with several, as Halesia, 

 Acer, Begonia, See. In Seeds the Wing is com- 

 monly solitary, except some Umbelliferous plants, 

 as Thapsia, Gartn. ^.21. 



