one chromatophore. In the outermost, assimilating cells it forms a plate lining 
the cell-wall, in the storage-cells the plate is divided into branched ribbons. Ac- 
Fig. 462. 
cording to the same author, the conducting cells 
of the medulla contain several leucoplastids. 
In 1911 (Hyaline hairs, p. 205) I have 
ranged this species among those which are 
devoid of hyaline hairs. I have, however, re- 
cently found such hairs in tetrasporiferous 
specimens collected at Hirlshals, Skagerak, in 
July 1914 and preserved in alcohol. They oc- 
curred scattered in the upper part of the frond. 
J The basal portion of the hair-cell is swollen 
Chondrus crispus. Section of outer cortex of tetra- and sunk in the frond; this swelling is emptied 
sporiferous specimen showing hyaline hairs. Hirts- when the hair has grown out. but still con- 
3 
hals, July. 835: 1. 
tains a thin layer of protoplasm lining the 
wall. The supporting cell is shorter and thicker than the surrounding cells and richer 
in contents (Fig. 462). The hairs attained a length 
of up to 250 w. 
The three kinds of reproductive organs are 
produced in separate individuals. 
The antheridia have been examined by Burr- 
HAM, DARBISHIRE and more recently by Gruss. 
DARBISHIRE found them in particular small and 
narrow white leaves (spermophores), while Miss 
Gruss describes them as whitish-pink patches 
or sori on the upper parts of the thallus of an 
otherwise normal vegetative plant. BUFFHAM and 
DARBISHIRE found them ripe in September and 
October, while Gruss found the material examined 
fully fertile in the spring, and she suggests that 
there are two seasons of spermatial production, 
spring and autumn. The outermost cortical cells, 
according to this author, give rise to two an- 
theridial mother-cells from which two antheridia 
spring. For more details see GRUBB’s paper. 
The procarp was first described by SCHMITZ 
(1883, p. 238), later by DARBISHIRE and recently by 
Ky in (1923, p. 20) who also followed the develop- 
ment of the gonimoblast. The three-celled carpo- 
Fig. 463. 
Chondruscrispus. North of Læso,9,5m,January. 
With cystocarps (above). Photo, */; nat. size. 
gonial branch is borne on a large cell rich in protoplasm, which is the auxiliary cell.” After 
* According to DARBISHIRE, the large basal cell has a small cell cut off that is the auxiliary 
cell, 1. c. p. 28. 
