T913] HOLM—PHRYMA LEPTOSTACHYA 315 
is occupied by a broad, thin-walled pith, which is hollow in aerial 
internodes, but solid in the subterranean internodes, where it con- 
tains deposits of starch, but no crystals. As mentioned above, the 
nodes show no other modification of structure than an enlargement 
of the parenchymatic tissues, cortex and pith; partly also of the 
hypodermal collenchyma; furthermore, in these nodes the peri- 
cycle is very incomplete and without stereids; also the development 
of libriform goes on more slowly, so that several strata of cambium 
may be observed between the primary mestome strands. 
The leaf 
As indicated by the varieties described by Br1QvET, the foliage 
of Phryma exhibits several quite distinct forms, some of which may 
be found on the same plant, if we examine the leaf-pairs from the 
basal to the apical internodes of seedlings as well as of adult speci- 
mens. The leaf is described by Gray” as “ovate, acuminate, 
coarsely serrate.” A little more is given by Torrey,* who calls 
them ovate, but distinguishes between the lower ones (“abruptly 
narrowed at the base, and furnished with long petioles’’) and the 
upper ones (‘‘nearly or quite sessile”). SCHAUER describes the 
leaves as “ovato-oblonga, in petiolum longum attenuata, acuminata, 
grosse crenato-serrata”’; and finally, the Himalayan plant is said 
by Hooker” to have “ovate or ovate-lanceolate”’ leaves. As may 
be seen from the drawing of the seedling (fig. 1), the shape of the 
lowermost leaf-pair is broadly ovate and abruptly narrowed at the 
base, while the leaves above are elliptic. In fig. 4 I have drawn a 
leaf of a. specimen from the mountains of Virginia, and the entire 
foliage of this specimen showed this same outline. Fig. 5 shows a 
leaf of a specimen from Ohio, in which the uppermost three pairs 
showed this outline, while the basal pairs were much broader.. 
Finally, fig. 6 shows a leaf of a Japanese specimen, in which all the 
leaves were ovate and with the margin crenulate. Among some 
other specimens examined, I found the upper leaves of a specimen 
* Synoptical flora of North America. Second Edition. 212334. 1886. 
* Natural history of New York. 1843 (p. 53): 
“4 Flora of British India 47561. 1885. 
