Johnson. — On Stenogramme interrupta. 365 
thus help to make room for the growth and ramification of 
the meta-ooblastema filaments, in the medullary part of the 
fertile line, where they form, ultimately, dense aggregations of 
small rounded carpospores (Figs. 1.5, id) which are solitary or 
in chains of 2 or 3 . 
Examination of a fertile line, at its fullest development, 
shows a thick cortex formed of vertical rows of cells, the fruit- 
wall, pericarp, or involucre, enclosing a dense, more or less 
free, granular mass (Fig. 16). This mass, which appears at 
first sight, and when only slightly magnified, to be more or 
less continuous, is, in reality, made up of a large number of 
distinct cystocarps. The different cystocarps are formed in- 
dependently of one another, each being directly derived, as 
the result of a single act of fertilisation, from its own pro- 
carpium. Thus, what appears to be a single fruit, shows 
itself, on examination, to be a collection of fruits with a 
common fruit-wall. 
Systematic position. 
I do not propose to enter into a detailed consideration of 
the bearing of these investigations on the systematic position 
of the genus. Stenogramme was placed, with expressed doubts, 
by J. G. Agardh 1 in Ordo VI Rhodymenieae, with such genera 
as Rhodyjnenia and Plocamium . It is now placed by Schmitz 2 
with Phyllophora , Gymnogongrus , Ahnfeltia , and Actinococcus 
in the Tylocarpeae of the group Gigartininae, of which Rko- 
dymenia and Plocamium are not members. The plant Steno- 
gramme californica , for which the generic name Stenogramme 
was originated in 1841 by Harvey, proved to be, as Harvey 
admitted, identical with a plant discovered at Cadiz by 
Cabrera, and described in 1823 by C. Agardh as Delesseria 
interrupta , a name which was altered by Montagne to Steno- 
1 J. G. Agardh : Sp. Alg. II, 2, p. 373. 
2 F. Schmitz, Syst. fjbersicht d. Gattungen d. Florideen, 1889. My own in- 
vestigations of Stenogramme agree in the main with those of Schmitz, judging 
from an interchange of views by correspondence. My examination of the genus 
was almost completed some two years ago, but the results were not published as 
I was waiting for the appearance of Schmitz’s amplification of the work just cited. 
