HEXANDRIA. TKIGVNIA. 2i>7 



shining". Integument coriaceous; episperm white and mem- 

 branaceous. Nucleus greenish, consisting of an ovate cy- 

 lindric and homogenous somurhize, marked at its inferi- 

 or extremity (oi- contiguous to the umbilicus) with an al- 

 most imperceptibly minute gemmule, in the form of a 

 diaphanous point. 



The only species of the genus, common to morasses in 

 *Jie nortli of Europe. From the singularly isolated occur- 

 rence of this plaiU in the milder stales of America, I am 

 inclined to believe it on the decrease in such situations. 

 In ihe turf morasses, or moors as they are called, in the 

 northern parts of Yorkshire, (Craven) in England, I have 

 commonly seen tiie singular vestiges of this plant inlared 

 through spongy or more recent turf, obtained where none 

 of the plant exists at the present day. 



350. TRIGLOCHIN. L. (Arrow-grass.) 



Calix- double, each 3-leaved, the interior more 

 petaloid. Corolla mm^. Stamina 3 ov 6, Styles 



*^\';nv; stif^sijas 3 or G. luibt'scriii. Capsules 3 !»r 

 5, united above to a receptacuiar axis, separat- 

 ing at the base, each one-seeded, not spontane- 

 ously opening. 



Marsli plants with fibrous roots and grassy sheathing 

 leaves; scape naked, flowers spiked, numerous, inconspi- 

 cuous; anthers sessile, disposed in 2 series of 3 each (at 

 least in T. maritimiim); stigmas 3 to 6. 



Species. 1. T. * ekitiim. Persistent styles and capsules 

 6; fruit angular; capsules linear, dorsally depressed, with 

 acute margins; scape much longer than the leaves. Hab. 

 In fresh, and probably also in salt-water marshes, in the 

 state of New York. Ceriainly a very distinct species from 

 T. maritimum, the fruit bearing no sort of resemblance, 

 Obs. Scape about 2 feet high; "leaves very narrow; stami- 

 na 6, in 2 series, each subtended by a calix of 3 leaves, 

 maturing at different times. Spike nearly a foot long; 

 fruit subcylindric, attenuated towards the persistent styles, 

 6-angled; capsules obtuse at the base, acutely compressed 

 on the margins, and dorsally channelled, united above to 

 a common persistent axis (similar to that which exists in 

 umbelliferous plants), constantly 1 -seeded, not spontane- 

 ou;-.ly opening, thoui^h furnished with a distinct internal 

 cari'iated suture. 2. mantiminn. 3. pahistre. Flowers tri- 

 androiis, capsules linear. 4. triandrum- Fruit roundish.— 

 In South Carolina. 



