Comntelynacea—Commelyna. 537 
from Carolina, with pedunculate naked umbels of rosy 
flowers. 
2. COMMELYNA. 
Closely allied to the last genus, but of a more decided trailing 
habit, and with glabrous filaments. Named in honour of the 
Dutch botanists of this name. 
1. C. celéstis, syn. C'. tuberdsa.—The prettiest of the hardy 
species. It is a dwarf much-branched plant with oblong- 
lanceolate leaves and clusters of blue or white flowers issuing 
from aspathe. It is a native of Mexico, and rather tender. 
OrpEr XVL—JUNCACEZ. 
It we except Varthéciun: ossifragum, sometimes referred 
here, and mentioned by us under the Lilidcew, there are no 
hardy ornamental species belonging to this order. And we 
merely mention it to point out the differeuce between 
these and the essentially glumiferous plants. We have here 
a regular 6-partite perianth in two series, but the segments 
are either green or brown and inconspicuous. The fruit too 
in the indigenous genera Livzulu and Jéincus is capsular, 
either I-celled and 3-seeded, or 3-celled and many-seeded, 
and the leaves flat or fistular, 
Diviston Il.—GLUMIFERS. 
Perianth none or reduced to minute scales. Flowers en- 
veloped in imbricated membranous or coriaceous bracts called 
glumes. Fruit (in the orders referred to in this work) 1-celled, 
1-seeded, perianth-scales usually adhering to the seed. 
Orper XVIL—CYPERACEZ:. 
The Sedges are distinguished from the true Grasses by their 
usually angular solid not conspicuously jointed stems, and the 
sheath of the leaves when present is not split on one side. 
Leaves commonly very sharp at the edges. Anthers continuous 
with the filaments. Inflorescence paniculate, irregularly clus- 
tered, spicate.or racemose. The greater number of the plants 
