C 1632 ] 



Sagittaria rigida. Brittle-stalked 

 Arrow-head. 



Clafs and Order. 



MONCECIA PoLYANDRIA. 



Generic Character. 

 Masc. Cal. 3-phyllus. Cor. 3-petala. FiJam. fere 24. 



Fem. Cal. 3-phyllus. Cor. 3-petala. Pifiilla multa. Sem. muka, 

 nuda. 



Specific Character and Synonyms. 



SAGITTARIA rigida ; foliis lanceolatis carinatis, petiolis tri- 

 quetris, fcapis teretibus fimplicibus, capitulis femineis fcffili- 

 bus, ftolonibus reptantibus. 



SAGITTARIA rigida; foliis angufto-lanceolatis inferne cari- 

 natis rigidis utrinque acutiffimis, fcapo ramofo, floribus mo- 

 noicis. Purjb FL Amer. Sept. 397. 



SAGITTARIA bulk/a. Bonn Hort. Cant. ed. 6. p. 246. f 



This fpecies of Sagittaria increafes very faft by ruimers, 

 infomuch that in a fhort time it overran the aquarium in Mr. 

 Vere's garden at Kennngton-Gore. The ftems are remarkably 

 brittle, whence our Englifh name. The female flowers are 

 feffile, a charaSer which Mr. Pursh mentions as being peculiar 

 to his heteropbylla. We are informed by this Botamft, that our 

 plant is the fame as the one defcribed by him under the name of 

 rigida, of which he brought no fpecimen, and had only a fhort 

 imperfea defcription taken at the time of obferving it, to frame 



his charafter from. , „ r „ 



As in fome other fpecies, in this genus, bulbs are occafionall y 

 produced, but thofe not being peculiar to our plant, and 

 Mr. Donn's bulbofanol having been any where defcribed^ we 



