214 PROCEEDINGS OF THE AMERICAN ACADEMY 
genera. The other division, corresponding nearly to the old order 
Melanthacee, has distinct styles and a septicidal capsule conjoined 
with a persistent nerved perianth. 
The subdivision into tribes is here based upon the characters of the 
inflorescence, and such others as can be used without separating evi- 
dently allied genera, to avoid which it is sometimes found necessary to 
lay little stress either upon the degree of union of the segments of 
the perianth or upon root-characters. The grade of the tribes is 
equalized so far as possible by reducing the less positively marked 
groups to the rank of subtribes, though some isolated genera are 
still left, which refused to be so degraded. As respects the citation of 
authorities under the specific descriptions, only the more important 
synonyms and figures are usually referred to. Much indebtedness is 
acknowledged to the recent revisions of various portions of the order 
by Mr. J. G. Baker of Kew, although his conclusions are not in every 
case adopted. It is a source of regret that his last paper upon the 
“Colehicacee” has not yet been issued, and that the present article, 
which has been delayed for some time with the hope of benefiting by 
it, must be completed without such assistance. 
SERIES I. Floral bracts present’and more or less scarious. Perianth per- 
sistent; segments 1-several-nerved. Stamens perigynous; anthers introrse. 
Style undivided, persistent. Capsule loculicidally dehiscent. Seeds more or 
less turgid, ascending, with close black testa. Leaves with approximate longi- 
tudinal nerves and transverse veinlets. Pedicels often jointed. 
Exceptions. Style and perianth deciduous in Odontostomum. Style deciduous 
in Chlorogalum and Hesperaloe; sometimes wanting and capsule sometimes 
baceate or septicidal in Yucca. Fruit baccate or indehiscent, with light-colored 
seeds, in Convallariee and Nolinee. Seeds dark brown in Odontostomum ; hori- 
zontally flattened in Hesperocallis and Yuccee. 
Supserizs I. Inflorescence umbellate, upon a naked scape arising from a 
corm or bulb; sessile upon a short rootstock in Leucocrinum. 
Tripe lI. Allieze. Bracts (usually 2) broad and spathaceous : capsule more 
or less deeply lobed, the filiform style jointed upon the axis: seeds one to sey- 
eral in each cell, angular or subovate: perianth cleft nearly to the base; seg- 
ments l-nerved: pedicels not jointed: bulb rhostly tunicated. 
1, Attium. Flowers deep rose-color to white. Capsule subglobose 
or obovate, deeply lobed and often crested: base of the style en- 
closed between the lobes and jointed upon the short axis: cells 
1—2-ovuled at the base. Filaments usually dilated at base. 
Bracts 2 to 4. Leaves one to several. Scape from a tunicated 
bulb (sometimes rhizomatous) or rarely a coated corm. ‘Taste 
and odor strongly alliaceous. — In our species the sheaths of the 
