; he 
Usually quite rug 
166 The Botanical Gazette. (May, 
While the organism does not pass the endodermis, itsin 
fluence upon the hypertrophy of the tissues extends to the | 
endodermis and the tissue of the céntral cylinder on that | 
side. ; 
(To be continued.) 
Cornell University. 
The genus Corallorhiza. 
M. B. THOMAS. 
WITH PLATES XVI AND XVII. q 
The genus Corallorhiza contains twelve recognized and well 
defined species with widely varying habitat, being found i | 
Europe, Asia, United States and Mexico. a 
Four species are found in Northern United States; Co oo 
lorhiza innata R. Brown, C. odontorhiza Nutt., C. ec 
Nutt. and C. striata Lindl. Of these C. multiflora. has "I 
widest range and is the one found in greatest abundance 
The parts above ground have been quite thoroughly 
and th 
parts 
v ground certainly afford an opportunity for much ye ; 
able Investigation. The plants of the genus are ei 
» without chlorophyll, except a litte ci 
life, and in C. multiflora they often reach the height of #8 
een inches. ig 
he parts underer ibed 35 
ei ground are usually descr : 
much branched and toothed coral-like root-stocks (probabil 
root Parasitic) sending up a simple scape, with sheath in P 
of leaves, and bearing a raceme of rather small, dull-< 
nOWets."' FF 
and flowers it mi lant Ta 
ight be expected that the p henomena 
em 
etoile led oo he ine under 
e ste 
hae yledonous plant The vascular sy hich 
center of the stem; these are 5 
imentary. The whole vascular * 
Pee te. 
i 
