210 BOTANICAI. GAZETTE [MARCH 
tops, with a pointed, fastigiate apex. Pedicels verticillate in five or six 
rows, the erect rays forming secondary and tertiary verticils, each verticil 
subtended by three lanceolate, acuminate bracts.’ Petals 2-4™™ long or 
smaller, white with yellow unguis, obovate, often with two small inden- 
tations. Sepals striate with five pairs of ‘‘nerves,” oval, with white hyaline 
margins. Stamens six, twice as long as the ovules. Styles numerous, 
erect, longer than the ovules. Nuts not joined inwardly, thus leaving the 
center of the receptacle uncovered.—Growing in wet or dry mud. 
Var. PARVIFLORUM (Pursh) Torr. Fl. N. United States 12382. 1824.— 
A. parviflora Pursh, Fl. Am. Sept. 1:253. 1816. A. trivialis Pursh, |. c.— 
Flowers small, 3-4™™ in diameter. Peduncles slender, thin, often bent. 
A broad-leaved form of this is A. Plantago americanum in Roem. et Schult. 
Syst. '77:1598. 1830 =f. LatiForruM. A representative of this variety 
with lanceolate leaves (= f. STENOPHYLLUM) is A. Geyeri Torr. in Rep. 
Upper Miss. 162. 1843, according to BucHENAU, though the description 
in RypBERG’s Flora of Montana (p. 19) would rather identify it with 
A. arcuatum Michalet. 
Var. MicHaLetm Aschers. et Graebn. Synops. Mitteleur. Flora 12382. 
1898.—A. major S. F. Gray, Nat. Arr. Brit. Pl. 2:216. 1821.—Flowers 
larger than in the preceding variety. Petals twice as long as the sepals. 
Peduncles stouter as a rule, strict. 
» Forma Latirorium Aschers. et Graebn. |. c. 383.—A. Jatijolium Gilib. 
Fl. Lith. 5: 222. 1781. A. Plantago latifolium Kunth, Fl. Berol. 2 : 295- 
1838.—Leaf-blades usually large, ovate, acute, with rounded or cordate 
(more seldom attenuate) base. 
Forma STENOPHYLLUM Aschers. et Graebn. I. c. 383.—A. lanceolatum 
With. Bot. Arr. Brit. Pl. ed. 3. 22362. 1796. A. ranunculoides All. FI. 
Pedem. 1: 243. 1785. A. Plantago lanceolatum Kunth, FI. Berol. 2 : 295- 
1898. A. major B lanceolata S. F. Gray, |. c.—A smaller plant. Leaf- 
blades broadly or narrowly lanceolate, acute (sometimes with a repand- 
attenuate base). This is a form produced by insufficient nutrition of the 
plant. 
A. Plantago L. grows over the whole temperate part of North America, 
where all the different enumerated varieties and forms will be found; var- 
Michaletii extends its range also over Europe, Asia, and northern Africa. 
2. ALISMA ARCUATUM Michalet, Bull. Soc. Bot. France 1:312. 1854.— 
A. Plantago 8 arcuatum (Michalet) Buchenau, Ind. Crit. Abh. Nat. Ver. 
Bremen 2:34. 1871. A. Plantago B decumbens Boiss. Fl. Orient. 5:9- 
1884.—Scapes two to four (usually three), growing out one by one, and 
thus showing the highest number late in the season, always unequal in 
