MONOECIA TRIANDRIA 



519 



1. C. flmilis, Wllld. Leaves verticillate by sixes, linear, denticu- 

 late near the apex, spreading. Beck, Bot. p. 384. 

 Fiuvialis flexilis. Peri* Syn. 2. p. 530. 



Flexible Caulixta. 



Root annual J Stem G lo 12 or 18 inches Ion?, filiform, jointed, smooth, dichoto- 

 mously branching, submersed. Leaves mostly aggregated or subverticillate in 

 4's or 6's, sometimes opposite, half an inch to an inch long, very narrow, linear, 

 acutely denticulate on the margin, especially towards the apex, sessile, dilated 

 and sheathing at base. Flowers s ditary, axillary, sessile. Ovary elliptic-oblong ; 

 style fllifrrm; stigmas ? or 3, simple. Capsule membranaceous, i-cclled, 1-secded. 

 Sted large, oLbnj, shining, pale straw-color. 

 Hub. Ponds, and sluggish streams : frequent. Fl. July— August. Fr, Sept. 



Obs- Collected in 1835, by Mr. Joshua Hocpes. There is one other species in 



the U. States. 



[Callitriche. Moncmdria DlgyniaS] 



[Arum. Order PJya/tdn'a, of this Class."] 



Order 2. Diandria. 



[Fraxinus. Lemna. Diandric Afono&yxia.'] 



[Podostemum. Diandria Digynia.] 



Order 3. Triandria. 



416. TYPHA. L. Jfutt. Gen. 730- 



[Greek, IHphos, a bog, or marsh ; from its place of growth.] 



Florets in a long: dense cylindric spike, with the stamiuate ones above. 

 Stamixate Fl. Perianth 0. Stamens 3 together, united below 

 into I filament, inserted on the hairy receptacle. Pistillate Fl. 

 Perianth 0. Ovary pedicellate, surrounJcd at base with hairs resem- 

 bling a pappus. 



Herbaceous aquatics : leaves long and linear; culm without nodes, terminating 

 in a dense cylindric spike, which is more or less Interrupted in the middle. Sat. 

 Ord.'2X>. Lindl. TtPRACBJB. 



1. T. latifolia, L. Leaves suh-ensiform, nearly flat; stamiuate 

 and pistillate spikes approximate, or almost continuous. Beck, Bot. 

 p. 380. 



B no ad-leaved Ttpha. Vulgo — Cat-tail. Cooper's Reed. Reed-mace. 



Gallice — Masse d'eau. Germ. — Die Rohrkolbe. ffisp. — Espadaria. 



Root perennial. Culm 4 or 5 feet high, simple, terete, striate, smooth, leafy at 

 base. Leaves about as long as the culm, and 1 third to 2 thirds of an inch wide? 

 liaear-jtisif Tin, tapering at apex, but obtuse, striate-nerved, smooth, sheathing 

 the culm at base. Flowers in a dense terminal spike,'- the stamiuate florets at th«* 

 summit, in a terete yellowish-brown spike G to 8 inches long, and near an inch in 

 tlianuter, with a membranaceous sheathing deciduous bract at base as Long as the 

 spike,— the pistillate fljrets imm-idiately below the staminale, Inacylindricgreen- 

 ishbrown spike \ to 6 inches long, an I half an inch to 3 quar'ers in diameter, 

 SjnuUims in contactor cjniiau >us wit'i tlu sumhrite spike, often with a naked 

 spice af now half an inch between them. Pericarps very minute and numerous, 

 l-fttded. 



