2? CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
segments purplish, linear, twice as long as the tube; stamens inserted at the top of 
the perianth tube, 5 em. long or less; ovary free at the tip; capsule oblong to obovate, 
less than 2.5 em. long. 
This species, as T have characterized it above, is perhaps the commonest Manfreda 
in Mexico, except WM. brachystachys, and seems to be frequent over much of the table- 
land region. It has been, however, one of the most difficult species for me to make 
out, and even Mr. Baker only cites a single cultivated specimen. Jacobi (at least I 
infer so from Engelmann’s manuscript) described the flowers incorrectly, for he states 
that the stamens are inserted at the base of the perianth tube. This seems to have 
led Engelmann and Baker to separate 1. protuberans. Hemsley, in the Biologia and 
elsewhere, and Watson (in ITerb.) referred the specimen so separated to A. guétata, in 
which opinion [Tam inclined to concur. 
14. Manfreda planifolia ( Wats.) Rose. 
Agave planifolia Wats. Proc. Am. Acad. 22 : 479, 1887. 
Perianth 1.8 em. long; segments 3 or 4 times as long as the tube; stamens long- 
exserted. This is one of the broadest-leaved species which I know. Here also has 
been referred Pringle’s No. 2265 from the Sierra Madre near Monterey, State of 
Nuevo Leon. 
Type collected by Mr. C. G. Pringle, ‘‘Mapula Mountains, Chihuahua,’ in 1886 
(No. 1141). 
1 
5. Manfreda undulata (Klotzsch) Rose. 
Agave undulata Klotzsch, in Otto & Dietr. All. Gartenz. 8: 274. 1840, 
Leaves 4.5 dm, long, 3 cm. wide, channeled down the face, not spotted; glaucous 
green, perianth tube 8 mim. long; segments 16 mim, long; insertion of the stamens 
not given, 
This species seems to be known only from plants which flowered in Berlin in 1869. 
16. Manfreda rubescens Rose, sp. nov. 
Bulbs oblong, covered with a dense mass of brown fibers; basal leaves linear- 
lanceolate, erect, 2 to 2.5 dm. long, 8 to 10 mm. wide, acute, glabrous, green, not 
spotted; stem leaves 4 to 6, bractlike; peduncle 6 to 9 dm. high; flowers few (5 to8), 
alternate, sessile, dark purple, 3.2 to 3.6 em. long, including the ovary and stamens; 
ovary smooth, 8 to 10 mm. long; perianth tube very short, 2 to 4 mm. long; seg- 
ments 1.2 cm. long; stamens 2.5 em. long, inserted at the top of the tube; ovary free 
at tip. 
Only a few specimens seen in one locality, a small grassy opening along a little 
stream in the western foothills of the Sierra Madre near Pedro Paulo, Territorio de 
Tepic, August 4, 1897 (no. 1994). 
This species is perhaps nearest M. guttata (A. protuberans), but has fewer and 
smaller flowers, and very different leaves. 
17. Manfreda jaliscana Rose, sp. nov. 
Leaves almost 6 dm. long, 1 em. wide; perianth tube, 4 to 8 mm. long; lobes 
oblong, 12 to 14 mm. long, 3 mm. wide, purplish; stamens, 7.5 em. long, inserted 
near or at the top of the tube, purplish; anthers, 12 mm. long; ovary slightly glau- 
cous; capsule oblong, 3 em. high, constricted at base into a short stipe, apiculate 
at tip. 
Collected by Mr. C. G. Pringle near Gaudalajara, December, 1889 (no. 1850), and 
distributed as 1. variegata, but very different from that species, at least as understood 
by Baker, Engelmann, and others. I have not seen Jacobi’s original description, but 
from notes left by Engelmann, which are apparently copied from Jacobi, I am 
inclined to think that the Texas plant, which goes under the name of 4. rariegata, 
is properly so referred. Also collected by E. W. Nelson, west Mexico, 1903 (no. 
6872). : 
