122 
k, Thallus of Zuzu/aria with gemmae cups, * 2. 
1, m, n, o. Stages in development of gemmae, circa > 50. 
. < Gemmae with rhizoids aa. bb. grown on both ends, circa 30. 
A new fossil Grass from Staten Island. 
By ARTHUR HOLLICK. 
(PLATE 298.) 
PHRAGMITES AQUEHONGENSIS N. sp. 
Culms round, narrowly striate longitudinally, articulate, occa- 
sionally dotted with one or more circular scars immediately above 
the articulations ; internodes short; rhizomes tuberous, branching, 
consisting of irregularly rounded, articulated parts, which are 
longer than broad, with knots or scars either at the joints or be- 
tween them ; leaves wanting. 
Locality: Clifton, Staten Island, N.Y. 
The first discovery of specimens representing this species was 
made in 1894, but these merely consisted of a few fragments of 
jointed stems and I referred them at the time to Eguzsetum.* 
Subsequently better specimens were obtained, consisting not 
only of jointed stems, but also of tuberous rhizomes, and their 
affinity with the monocotyledons was then satisfactorily estab- 
lished.t 
The generic name Phragmites has been finally adopted largely 
for the reason that similar fossil fragmentary remains have been 
described and figured under that genus, and not necessarily because 
our specimens are supposed to belong in it without question, al- 
though they certainly represent some grass. The specific name is 
coined from “ Aquehonga,” the Indian name for Staten Island. 
The specimens figured are fairly representative of the material 
collected. They consist of fragments of culms and rhizomes, pre- 
served in a conglomerate of yellow gravel, cemented with limonite. 
This conglomerate is not in place where found, but forms part 
of the drift material, beneath the bowlder till, on the extreme 
southern edge of the terminal moraine. It was uncovered by rea- 
son of an excavation having been made there for building sand 
* Proc. Nat. Sci. Assn, Staten Isld, 4: 37. 
+ Ibid, 6: 12, 
