te 
> Oss, This 
- Fope, but is distinctly perennial; I have not however, had the 
= eer aey of examining good specimens, sceing it only in 
: -. apreiete SFiaetrous, rather pungent; flowers triandrous? 
30 §. WFRIANDRIA. MONOGYNIA, 
axillary or terminal; (growing chiefly in arid and saline 
' Wastes.) : 
Spectes. 1. *Americanumt. There are of this genus 5 
other species, 4 in Siberia, the 5th near the Caspian sea 
43. XYRIS. LZ. (Yellow Flowering-Rush.) 
Flowers in an ovate-cylindric capitulum.— 
Calix glumaceous, 3.valved, valves unequal, 
the outer coriaceous. Corolla 3-petalled, equal. 
Stigma trifid. Capsule 1-celled, 3-valved. Seeds 
‘very numerous, and minute. 
Leaves all radical, gramineous, or like those of the Iris, 
linear, or ensiform-subulate, sometimes tortuose, intimate- 
ly sheathing at their base; the vaginz of the leaves often 
enveloped in a gelatinous fluid. Scapes simple, round, 
ancipital, or contorted, terminating in a dense spike or ca- 
pitulum. Flowers closely imbricated; of very short du- 
ration, ge iag 3 yellow, (in the X. americana of Guianne, 
blue, but the leaves triquetrous, and the outer glumes 
acute!) Petals retuse, often crenate. Outer glumes of the 
capitulum concave, rounded, and obtuse, frequently abor- 
tive below. 
Species. 1. Indica. 2. Caroliniana (X- Jupicai. Mic#. 
X. flexuosaof Muhlenberg’s Catalogue.) 3. fimbriata, El- 
: liott. 4. brevifolia. 5.juncea. see ee 
Orgs. Of this genus there are’ 2 species in India, 1 at 
the Cape of Good Hope, 1 in Peru, and another in Gui- 
_. anne (South America,) the rest in the United States, of 
~~ “which the X. Indica is common to India and North Ame- 
_ rica as far as the 40th degree of north latitude. 
2 ttt} Flowers glumaceous. 
44, KYLLINGIA. L. 
Flowers distinct, disposed in a roundish, ses- 
* 
sile, subimbricated spike, or umbellate, the 
__} Perennial; stem cespitose, leaves opposite, connate, crowd- 
~ On the arid hills of the Missouri. 
species greatly resembles the P. arvense of Eu- 
a | 
a 
; ao 
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