1913] HOLM—PHRYMA LEPTOSTACHYA 317 
naked as stated by SCHAUER, but covered with numerous hairs, 
glandular (fig. 11) as well as pointed (fig. 14). 
Summary 
Phryma represents a sciaphilous type, well marked by the struc- 
ture of the ample leaf blade, with low palisade cells and very open 
pneumatic tissue; also by the poor development of the mechanical 
tissues in the stem as well as in the leaf. The vegetative reproduc- 
tion is confined to the few buds on the short pseudo-rhizome, and 
the roots produce no shoots. For dispersing the seeds the plant 
is well equipped by the hooked teeth of the persistent, reflexed 
calyx 
BROOKLAND, District oF COLUMBIA 
EXPLANATION OF PLATES VII-X 
Fic. 1.—Seedling of Phryma leptostachya: the dotted line indicates the 
surface of the soil; Ep, epicotyl; Cot, the achene with — cotyledons; 
H, hypocotyl; R, primary root; r, secondary root; natur 
Fic. 2.—Basal portion of same seedling: B, buds in the po of cotyledons; 
other letters as above; magnified. 
Fic. 3.—The pseudo-rhizome of a mature specimen: S, base of stem; 
B, bud which will produce a floral shoot in the following year; X 2. 
Fic. 4.—Leaf of a specimen from Virginia: two-thirds natural size. 
Fic. 5.—Leaf of a specimen from Ohio: two-thirds natural size. 
Fic. 6.—Leaf of a specimen from Japan: two-thirds natural size 
Fic. 7.—Cross-section of a subterranean internode showing the endoxyle; 
X 480. 
Fic. 8. ae ne section of the basal internode of a lateral inflorescence: 
End, endodermis; L, secondary leptome; 744 
Fic. 9. Bi eee section of one of the apical internodes of the seedli 
C, cortex; M, hadrome of a primary mestome strand; P, pith; other letters 
as above; 744. 
Fic. 10.—Cross-section of the epicotyl of a . seedling: L and H, interfas- 
cicular leptome and libriform; other letters as above; 744 
IG. 11.—Glandular tear: from the throat of the corolla; 600. 
- 12,—Glandular hairs from the leaf; X 600. 
Fic. 13.—Same; X 600. 
Fic. 14. —Poitited hair from the throat of the corolla; 600. 
Fic. 15.—Cross-section of an old internode of a mature specimen: L and 
H, interfascicular leptome and libriform; the other letters as above; 600. 
raj he 
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