70 MONOCOTYLEDONEÆ. SAGITTARIA, 
longe acuminatis, acutis ; pedicelli masculi graciles, femineos crassio- 
res superantes; flores minores ; carpella utrinque alata, stylo arcuato 
eadem æquantia longe aristata. Varietas specimine unico, incom- 
pleto vix nota; primo aspectu, earpellorum et styli habitu, species 
distineta videtur; sed in omnibus plantis americanis, stylus valde 
variat, multo magis quam in plantis europæis vel Mit 
In Alabama (Drummond 1832 n. ? et n. 149 in herb. Kew). 
2. S. graminea (Michaux Fl. bor. Amer. p. 190); foliis anguste 
ovatis vel lanceolatis, nervis a basi discretis; scapis erectis, bracteis 
eoalitis; floribus longe pedicellatis, divaricatis vel reflexis ; carpellis 
lateraliter costatis, medio glandulosis, undique alatis, stylo brevi. — 
Willd. Spec. 4, p. 411; Kunth Enum. 3, p. 160; Pursh Flora À. 
Am. 2, p. 397; Engelm. in Gray Manual p. 494. S. simplex autt. 
amer. non Pursh (fid. Engelm. l. c.). S. acutifolia Pursh Fl. N. Am. 2, 
p. 397 (forma aphylla, fid. Engelm. 1. c.). S. stolonifera Engelm. et 
Gray Pl. Lindheim. p. 26 (fid. Engelm. ipso in litt. ad. Buchenau). 
S. Purshii Kunth Enum. 3, p. 160. 
9, Rhizoma obliquum, fibrillas radicales, validas agens. Folia exte- 
riora (phyllodia) ad laminam complanatam, membranaceam, superne 
acutam reducta ; interiora longe petiolata ; petioli erecti, striati, gra- 
ciles, basi dilatato-amplectentes, 15-25 centim. longi, limbi lanceo- 
lati, vel lineari-lanceolati, utrinque acuti, marginati, 3-5 nervii, 
7-15 centim. longi, 3-20 mill. lati. Scapus erectus, gracilis, sim- 
plex, folia subæquans. Inflorescentia monoica, flores 4 et © longe et 
graciliter pedicellati, pedicellis 15-18 mill. longis, ante besa erectis, 
postea divaricato-patentibus. Bracteæ 3, ovatæ, breviter acuminatæ, 
acute, fere usque ad apicem coalitæ, 3-4 mill. longæ. Flores mediocres: 
sepala 3-4 mill. longa, post anthesin reflexa ; petala obovata, ampliora. 
g Stamina 15-20, 1-2 mill. longa, filamentis complanatis, basi dila- 
tatis, glanduloso-pubescentibus, antheris sagittatis, fere basifixis, 
filamenta æquantibus. © Carpella late ovata, parum compressa, late- 
raliter glandulosa, et circa loculum costato-cristata, stylo brevi vix 
aristata, undique anguste marginato-alata ; semina striata. 
6, platyphylla Engelm. 1. e.; folia ovata, 12 cent. longa, 3-4 cent. 
lata, apice acuminata, acuta, basi sensim in petiolum desinentia, 5-7 
nervia. Bracteæ latiores quam in var. a; flores Y similes, autem 
pedicellis brevioribus, crassioribus, post anthesin reflexis. Carpella 
onmino similia. 
Var. a in America septentrionali passim, a Terra Macs (herb. Kew) 
