﻿Vol. 25 



No. 9 



BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



SEPTEMBER 1898 



Studies in the Botany of the Southeastern United States.— XIV. 



By John K. Small. 



I. HITHERTO UNDESCRIBED SPECIES. 



* Nymphaea macrophylla. 



Perennial from very thick horizontal rootstocks, bright green. 

 Foliage glabrous or nearly so : leaves (emersed) leathery ; petioles 

 short, sometimes sparingly pubescent ; blades oblong-ovate, '3-8 

 dm. long, obtuse, notched at the apex, 1-2.5 dm. broad at the 

 middle ; sinus V-shaped, or rarely closed : flowers erect, subglobose, 

 3-5 cm. in diameter: sepals leathery, 2.5-3 cm - l° n g> concave: 

 petals yellow, slightly longer than the sepals : stamens numerous : 

 stigmatic disk becoming 3-3.5 cm. broad, often deeply crenate, 

 the coarse stigmatic lines not approaching the edge : capsule ovoid, 

 3-4 cm. high, coarsely ribbed above the middle : seeds subglobose, 

 5-6 mm. in diameter. 



In ponds, creeks and slow streams, Florida to Louisiana. 

 Spring to fall. 



Both old and recent specimens of the common species of Nym- 

 phaea of Florida and the other Gulf States indicate that it is spe- 

 cifically distinct from the northern Nymphaea advena. Plants 

 belonging to this segregate may be recognized by the very large 

 leaf-blades which are of a peculiar ovate-oblong shape and with a 

 midrib that dries flat. In the flower the larger stigmatic disk is 

 °ften much more deeply crenate than in the case of Nymphaea 

 advoia and its stigmatic lines, although larger, terminate remotely 

 from the edge of the disk. 



I have seen specimens from several of the Gulf States : 



[Issued xo September.] ( 465 ) 



/ 



x^° 



