Paronychia argyrocoma (Michx.) Nutt.

FROM THE HERBARIUM OF A. A. HELLER.
Plants of north Carolina Oolleoted in Vicinity of blowing Rook,
Watauga County.
A. A. Heller, :
Lancaster, Pa. i;
NEW YORK BOTANICAL GARDEN
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1.	paronychia argyrocoma (Michx.) Nutt. Silver-Whitlow-Wort,
Silver-Ohickweed. Perennial from a tanroot. Branches numerous, tuft-
forming or matted. Stems simple or forked, 5—50 cm. long, retrorsely
silky oubescent. Leaves 1—3 cm» long, flat, or the margins inrolled,
linear or linear-lanceolate, acute, articulate, appressed, silky pubescent
to quite glabrous. Stipules silvery-hyaline, lanceolate, acute, shorter
than the leaves. Flowers in dense cymes, subtended and mostly concealed
by conspicuous silvery bracts. Calyx 3-5—6-0 aim. long, appressed, pubes-
/
cent, the seoals connate at the base, hooded at the apex and terminated in
a white, flat, more or less hirsute awn, 0.5—1.5 mm. long. Utricle mem-
branous, pubescent at the summit. Seed reddish-brown, essentially smooth
under low magnification.
Subsp. argyrocoma Maguire, "eaves silky pubescent. Oalyx 4.7—
6.0 mm. long*
Subsp. albimontana (Fernald) Maguire, leaves sparingly pubescent
or sometimes glabrous. Oalyx —4.5 mm. long
tRNgp
PLANTS OF WESTERN NORTH CAROLIh
oolleoted on the summit of stone mountain, calow£
. /	'July 31,1891,
.( ' .	K. SMALL and A.«A. HELLER.
NEW YORK BOTANICAL GARDEN
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Directions to artists:
1. P. argyrocoma ssp. argyrocoma
1.	Habit sketch of shoot showing one fertile and two or three sterile
branches, x 2 to be reduced to x 1
2.	Detail of flower (to be boiled) X 20 to be reduced to X 10
5. Detail mature fruit from dissected flower, showing complete pistil,
showing ovary, style, and stigma X 20 to be reduced to X 10
(flowers in jacket from Allard 2159)»
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