Pirate IV. 
NERE LULA PEEXPEIS, Ac: 
NV. Brongniartiana Coss. et Germ., Atlas, 1845, t. 40; Chara flexilis Ag. in part 
Schkur, 1808 ; Chara inermis pellucida Schmiedel Ic. pl., t. 14; Ch. furculata Rchb. in 
Meessl. Handb.; Ch. Brongniartiana Coss. Germ. et Weddell, Catal. I pl, 1842; Ch. 
commutata Rupr. 
Sub-family NivELL&. Stem and eaves never corticated ; the latter in whorls of 5-3 
(often increased by small accessory ones) with one or at most 2-3 nodes, bearing leaflets, 
Leaflets greatly developed consisting of one to many segments, often having a secondary 
leaflet-bearing node which may be several times repeated. Sforangva arising directly 
from the nodes of the leaves (this is still unsettled as regards Tolypella), often clustered, 
with a short stipe and a proper basilar node. Corenzla ten-celled, formed by the two 
celled extremities of the five enveloping-cells, small, colorless, either persistent or evanescent 
without an inner calcareous layer. 
Genus NitELia. Leaves two-to several-segmented, but with only one node bear- 
ing leaflet. Leaflets either similar to the leaves and not again divided or again 
provided with a node, bearing secondary leaflets and overtopping the primary ray 
(stem or branch), when they are either simple, or repeatedly forked with numerous tips 
(flabellata) ; these ultimate divisions one-to-many-segmented. Aztherédia apicaL on the 
primary ray and secondary divisions of the leaves, separated from the leaflet bearing node 
by a low, disk-shaped stipe-cell, hence appearing in a fork. Spforangia LATERAL, ON THE 
NODES OF THE LEAF, single or numerous, in moneecious species appearing just beneath the 
antheridium (A. Braun). 
This genus has been divided by Prof. Braun as follows : 
I. MoNaARTHRODACTYLE, ultimate segments of the leaves one-celled (coronula evanescent). 
II. DrtarRTHRODACTYLE, ultimate segments two-celled(coronula persistent). 
Il]. PoLyARTHRODACTYLE, ultimate segments 3-6 celled. Each of these subdivided as 
follows : 
Diccz. (  GLEocARPA. 
(Anth.and spor. en- 
veloped in mucus.) 
I. (  Furcara. { Homa@mopuHyLie. f 
| 
| GYMNOCARPA. 
(Simply divided.) (Leaves of a verticill 
of equal length.) 
(No mucus.) 
| 1 i | GLOCOCARPA. 
| | Monece. GYMNOCARP#. 
HETEROPHYLL&. Only one moneecious 
(Leaves of a verticill foes IV. Clavata (N. America., 
variable ; some small, 
some long.) 
FLABELLATA, all | Diccaz. 
| (Repeatedly divided.) | 
HoM@oOPHYLL&. Monece. 
