238 CAUDA, ROSTRUM, ETC. 



which can orig-inate from a Calvx. For the former 

 of these Gasrtncr adopts the term Coma, for the latter 

 Pubes, which last also serves for any downiness or 

 wool about the Testa of a seed, as in the Cotton plant, 

 and Blandfordia nobilis, Exot. Bot. t. 4. 



Cauda, f. 205, a Tail, is an elongated, generally 

 feathery, appendage to some Seeds, formed from the 

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

 Dryas, t. 451, Geum, t. 1400. (114) 



nostrum, a Beak, mostly applies to some elongation 

 of a Seed-vessel, originating likewise from the per- 

 manent style, as in Geranium, t. 272, Helleborus, t. 

 200, though it is also used for naked seeds, as Scan- 

 dix,f. 206, t. 1397. 



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

 pendage to Seeds, as in Embothrium, Bot. of N. 

 Holl. t. 7, Banksia Couchium, Bignojiia echinatOy 

 (115) Gtiertn. t. 52, Rhinanthus, Engl. Bot. t. 657, 

 serving to waft them along in the air. Gasrtner 

 wished to confine this term to a membranous expan- 

 sion of the top or upper edge of a Seed or Seed-vessel, 

 using margo membranaceus for one that surrounds the 

 whole, but he has not adhered to it in practice. Cap- 

 sules are sometimes furnished with one wing, as the 

 Ash, oftener with several, as Halesia, Acer, Begonia, 



(114) [Sufficiently evident, as in Clematis Virginiana, and Ge- 

 iun rivale, natives of the United States.] 



(115) [In Bignonia echinata, the wings of the seed are very 

 large. In others of the genus they aie not less observable^ 

 though smaller, for instance, the Catalpa Tree, and Trumpe- 

 Flowers.] 



