238 MACKENZIE: NoTes ON CAREX 
GerorciA: Riceboro, Liberty Co., Harper 2783, May 2, 1904. 
Frorima : Apalachicola, Chapman, Biltmore no. 225a; Chup- 
man, 1850. 
The three species here described may be separated by the fol - 
lowing key: 
Fertile culms aphyllopodic, strongly fibrillose and purplish-tinged at base. C, /acuséris, 
Fertile culms phyllopodic, neither fibrillose nor strongly purplish tinged 
at base ; perigynia nerve 
Staminate spikes Scided. caend: perigynia finely impressed-nerved 
r appearing nearly nervel ess at maturity; pistillate scales not 
prominently purplish-margined. C. impressa. 
eseshinte spikes thick, eu approximate ; perigynia strongly 
nerved at maturity ; pistillate scales prominently purplish-margined. C. riparia. 
NEW EASTERN SPECIES OF CAREX 
~ Carex aestivaliformis sp. nov. 
Carex gracillima x aestivalis Bailey, Bull. Torrey Club 20: 417. 
1893. | 
Culms densely cespitose, slender, erect or ascending, 3.5-7 
dm. high, glabrous or nearly so, sharply triangular and roughened 
on the angles above, exceeding the leaves, strongly purplish-tinged 
at base, aphyllopodic. Well-developed blades some four or five 
to a fertile culm, the sheaths (especially the lower) sparsely short- 
pubescent, the upper not overlapping ; blades glabrous or sparsely 
pubescent and ciliate near base, rough, 2-3.5 mm. wide, the longer 
about 3 dm. long, flat, ascending ; spikes three or four, widely 
separate or slightly approximate, narrowly linear, 1.5—6 cm. long, 
3.5 mm. wide, the terminal gynaecandrous, the lateral pistillate, 
nodding or weakly erect on long, slender, rough peduncles, the 
or loosely at base; lowest bract leaflet-like, short-sheathing, 
shorter or longer than inflorescence, the upper reduced; scales 
ovate, short-acuminate, acute or obtuse, several-nerved, green with 
hyaline margins, sometimes tinged with reddish brown, narrower 
than and about two thirds the length of the perigynia ; perigynia 
oblong-ovoid, flattened-triangular in cross-section, deep green, 
glabrous, strongly several-nerved, 3—3.5 mm. long, 1.5 mm. wide, 
sessile and rounded at base, abruptly very short beaked, the beak 
0.25 mm. long, minutely bidentate and hyaline-tipped ; achenes tri- 
angular-obovoid, 2 mm. long, 0.75 mm. wide, not filling perigynia ; 
style straight, slender; stigmas three. 
The species above described has to my knowledge been col- 
lected in six localities, and each time the collector has had trouble 
