1141 



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SAGITTARIA angustifolia. 



Narrow-leaved Sagittaria. 



POLYANDRIA POLYGYNIA, or MONCECIA POLYANDRIA. 



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Nat. ord. Alismac 

 SAGITTARIA L. 



concavus. 



ria nulla. Q 



Flores monoeci. Calyx trisepalus, abbreviatus, 

 Petala 3, membranacea, plana. $ ; Stamina indefinita : ova- 



nulla : ovaria indefinita 



in receptaculo hemi- 



spherico imposlta. Stigmata totidem simplicia. Pericarpia rostrata, 



monosperma, indehiscentia, niarginata.- Herbse palustres v. natantes 



(totiris orbis). Folia sagittata v. rariits simplicia^ petiolo longo tacunoso 



vaginante. Scapi viultifiori, lacunosif verticillis superioribtis masculis, 

 injerioribtis fosmineis. Flores albu 



S, angustifolia ; foliis lanceolatis vix costiveniis, scapo gracili subramoso, 

 pedunculis filiformibus subsequalibus petalis miiltb longioribus ; bracteis 

 ovatis acuminatis. 



Folia radicalia^ equitantia; petiolis 1^-pedalibvs, semitpretibus, sursHm 

 attenvatis^ in laminA lanceolatd^ sicca costiveniA^ crudd avenia, cxeuntibus^ 

 Sciipus Jbliis paulb longior^ gracilis^ snbramosus. Bracteee ovatcB^ acumi^ 

 nat<By pedicellis breviores. Pedicelli Jiliformes. Flores inferiores fceminei, 

 superiores masculi. Sepala subrotundo-ovata. Petala subroiunda, sepaiis 

 duplb longiora, multo minora quiim S, lancifoliae. 



A native of Essequebo, * whefice its seeds were brought 



to Mr. Colvill by M 

 flowering in October 



E. Davis. A pretty Vove aquati 



& 



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This is very near the S. lancifol 



of North America 



and the West Indies, from v^rhich it differs in havmg smaller 

 flowers, and narrower, less distinctly ribbed leaves. 



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Leaves radical, equitant: petioles a foot and half long, 

 half round, tapering upwards, terminating in a lanceolate 

 lamina, which when dried is ribbed, when fresh destitute 



of 



htly branched 



Scape a little long 



than the leaves, slender 



Bractea ovate, acuminate, shorter than 



the pedicels. Pedicels filiform. Lower flmvers female 



upper m 



Sepals roundish, ovate. 



Petals round 



twice as long as the sepals, much smaller than in Sag 



lancifolia 



J. L 



