72 MONOCOTYLEDONEÆ. SAGITTARIA, 
ovatis vel breviter lobatis ; floribus Y longe pedicellatis, Q sessilibus; 
bracteis vix coalitis, staminum filamentis pubescentibus, carpellis 
complanatis, dorso cristatis, medio glandulosis, stylo longe aristatis.— 
Beck Bot. of North. et Mid. States p. 377; Darlington Flora cestrica 
p.529; Kunth Enum. 3, p. 158; Gray Manual p. 494. Sag. rigida 
Pursh F1. p. 397 (forma in aqua profunda enata fid. Engelm. in Gray 
l. e.) ; Botan. Mag. t. 1632. Sag. bulbosa Donn. 
9| Rhizoma breve, stoloniferum. Folia erecta, petiolata, petioli 
striati, basi dilatato-amplectentes, 30-40 centim. longi; limbi 10-12 
cent. longi, 5-7 cent. lati, late ovati, basi rotundati vel cordati et 
lobis duobus angustis, divaricatis præditi, apice breviter acuminati, 
acuti, membranacei, 7-9 nervii, nervis primariis a basi discretis, secun- 
dariis parallelis, venis paucis anastomosantibus. Scapus sinuatus, 
sepe procumbens, folis brevior, 30 centim. altus. Inflorescentia 
monoica; verticilli inferiores (1-2) feminei, floribus brevissime pedi- 
cellatis, superiores masculi, pedicellis 20-25 mill. longis, erecto-paten- 
tibus. Bractez late ovatæ, obtusæ, fere a basi libere, pedicellis 
masculis breviores. Sepala ovata, obtusa, vix concava, post anthesin 
irregulariter reflexa, 5 mill. longa; petala ampliora. $ Stamina an- 
theris ovatis, loculis basi vix divergentibus, filamentis complanatis, 
elanduloso -pubescentibus vix brevioribus. © Carpella late ovata. 
complanata, stylo longiuscule rostrata, dorso superne marginato-cris- 
tata, 3-4 mill. longa. Semina, testa tenui leviter rugosa. 
Variat foliis rigidis, anguste lanceolatis, utrinque acutis, petiolis 
crassis (S. rigida Pursh) et foliis linearibus (fid. Engelm. in Gray L c.). 
In America boreali, a Canada (var. rigida) ad civitates meridionales 
ubi magis frequens ; prope St-Louis (herb. Kew et Petrop. forma foliis 
ovatis et angustis) in Illinois (Trécul), Pennsylvania (Reading, 
Leconte), prope lacum Michigan (Castelnau, omnes in herb. Mus. 
Paris.), in vicinibus New-York (herb. Martius), etc. 
5. Sag. lancifolia (Linn. Amoen. 5, p. 409); foliis pseudo-pen- 
ninerviis; scapo ramoso; bracteis fere liberis, elongatis; floribus pedi- 
cellatis, erecto- palku iind; staminum filamentis elongatis, pubescen- 
tibus; carpellis dorso cristato-alatis, medio glandulosis. — Linn. Sp- 
ed. 3, p. 1411; Willd. Spec. 4, p. 410; Sprengel Syst. 2, p. 633: 
Kunth Enum. 3, p. 158; Gray Man. of Bot. ed. 5, p. 493; Griseb. 
Cat. Cub. p. 218; Griseb. Fl. brit. W. Ind. islands p. 505; Plum. Ic. 
ed. Burm. p. 106, t. 116, fig. 1; Jacq. Amer. t. 248; Bot. Mag. t. 1792; 
