Page:Zacaton as a paper-making material (IA zacatonaspaperma309bran).pdf/11

 ZACATON AS A PAPER-MAKING MATERIAL.

5

which he called Crypsinna, based in part on the Crypsis of Humboldt, Bonpland, and Kunth, and in part on the Cinna of Kunth. As 1

established croura,

and

proof or a

by Fournier, Crypsinna included the species stricta, masetifolia. In November, 1881, Bentham, 2 having seen a copy of Founder's work before its publication, disagreed

with him and assigned the species macroura and macroura in the genus Epicampes Presl.

The following characterization

of

stricta

both

to

Epicampes macroura has been by Humboldt, Bon-

translated from the original Latin description pland, and Kunth: 1

Crypsis macroura. Culm erect, simple, glabrous; leaves and sheaths scabrous; panicle spikelike, very long, cylindrical, erect; glumes equal, [floret] nearly as long

Found on the sunny side of a mountain

as the glumes.

mountain

Fig.

of Toluca, at

an altitude

in the State of Mexico near the Flowers in September.

of 11,000 feet.

—

Cross section of part of a culm from the epidermis to the central cavity, X 320, showing hypodermal stereome, two mestome strands, and colorless parenchyma between them.

2.

Culms

linear,

striate, glabrous,

longer than the internodes.

(2-cleft),

pubescent below the glabrous nodes. Sheaths rather lax, Ligule very long, less than 1 inch, bifid

erect, simple, 3 or 4 feet tall, glabrous,

Leaves narrowly

glabrous,

strictly erect,

1

convolute

(?), striate,

the lobes acuminate.

foot long.

slightly scabrous.

Panicle spikelike,

dense,

Spikelets pediceled, the pedicels scabrous.

cylindrical,

Glumes linear,

acuminate, carinate, subequal, nearly glabrous, ciliate-hispid on the back, green. Floret slightly shorter than the glumes, lanceolate, acute, the lemma and palea concave, equal, slightly scabrous, green; the lemma 3-nerved, the palea 2-nerved, narrower.

The general appearance

of a

few culms taken from the tufts in shown in figure 1, which was drawn

which this grass usually grows is from a herbarium specimen. Figures

2

to 6, inclusive,

show the

microscopical structure of the zacaton plant. 3 The appearance of These an average and two small-sized tufts is shown in figure 7 1

H amboldt, Alexander, Bonpland, A.

t. 1, 2

3

p. 140-141.

J.

A.,

and Kunth, K.

S.

Nova Genera et Species Plantarum

.

Lutetise Parisiorum, 1815.

Bentham, George. Notes on Graminese. In Jour. Linn. Soc. [London], Bot., v. The drawings for figures 1, 2, 3, 4, 5, 6, and 11 were made by Dr. Theodor Holm.

19, p. 87-88.

1881.

.