EXCLUDED SPECIES 175 
It is interesting to note that the bracts or at any rate those with- 
out innovations exhibit inflated lobules, an indication of their peri- 
gonial character. 
he hyaline leaf-cells of C. Jooriana are also a unique char- 
acter among our Lejeuneae. On old leaves these cells soon be- 
come indistinct, and on poorly developed leaves they may be scanty 
or wanting, but it is rare to find a plant from which they are alto- 
gether absent. Hyaline marginal cells are known in a number of 
tropical Lejeuneae,* the majority of them being species of Colole- 
jeunea. The one most closely allied to C. Jooriana is perhaps the 
autoicous C. cardiocarpa, in which the 4 spike bears six to eight 
pairs of bracts. In this species also, according to Spruce, the 
lobule is plane, sublinguiform in shape, obtuse at the apex and 
almost parallel with the axis. 
Of our own species, C. Jooriana bears some resemblance to C. 
Biddlecomiae and C. Macounii. Aside from its inflorescence and 
hyaline cells, it differs from both these species in its ordinary leaf- 
cells which are plane or very slightly convex. It differs also from 
. C. Biddlecomiae in its much shorter stylus and from C. Macounü 
in the very different shape of its leaf-lobes. 
EXCLUDED SPECIES 
The species in the following list have all been recorded from 
the United States. They are now excluded either because they 
are imperfectly known or because there is insufficient evidence that 
they occur within our limits. All of these species are referred to 
more fully in the preceding text. 
. Neurolejeunea catenulata (Nees) Schiffn. 
Platylejeunea transversalis (Swartz) Schiffn. 
. Archilejeunea Auberiana (Mont.) Steph. 
A. xanthocarpa (Lehm. € Lindenb.) Steph. 
Lopholejeunea Sagracana (Mont.) Schiffn. 
Acrolejeunea torulosa (Lehm. € Lindenb.) Schiffn. 
Euosmolejeunea trifaria (Nees) Schiffn. 
Pycnolejeunea macroloba (Mont.) Schiffn . 
Lejeunea Caroliniana Aust. 
o ON بپ ج مه‎ No 
* Cf. Stephani, Hedwigia, 27: 288. 1888. 
a 
