346 BOTANICAL GAZETTE [ May 
TRIFOLIUM REPENS L., Sp. Pl. 767. 1753 
Reported by authors from the valley of Mexico and specimens from Central 
America have been examined. Probably introduced and sp about many 
of the larger cities and seaports. 
TRIFOLIUM MICROCEPHALUM Pursh, Fl. Am. Sept. 2:478. 1814. 
Guadalupe Island, Palmer (no. 831), Apr. 1, 1889. Probably also occurring 
in northern Lower California. 
TRIFOLIUM RHOMBEUM S. Schauer, Linnaea 20:740. 1847. 
As I have not been able to establish fully the identity of this species, further 
than to advance the suggestion that it is perhaps the T. mexicanum of Hemsley, 
the original description is given here in full. 
“Trifolium (Trijoliastrum) rhombeum S. Schauer: caulibus ad- 
scendentibus striatis cum petiolis pedunculis calycibusque villoso- 
lanuginosis, foliolis rhombeo-ellipticis obtusis mucronatis arguta den- 
ticulatis striato-venosis supra glabris subtus pilosiusculis glabres- 
centibus, stipulis membranaceis lato-ovatis mucronulatis pilosulis, 
capitulis axillaribus longe pedunculatis multifloris densis exinvolu- 
cratis, floribus pedicellatis demumque deflexis, calycis laciniis subae- 
qualibus setaceis erectis tubo brevi longioribus corolla tertia brevi- 
oribus glabris. 
“In montosis Mexici. Auahenks n. 164. (perennial). 
“Ex typo Tr. hybridi nostratis; inter mexicana forte affine Tr. amabili 
HBK., ceterum pubescentia, foliorum figura et serratura floribusque magnis. 
insignis. Petioli 6-9 lin. longi, stipulis a longiores; foliola subpollicaria. 
Pedunculi folium longe excedentes. Flores magni, yexillo 4 ve aequante 
Corolla alba ‘vel pallide rosea ex sicco rae vexillum emarginat 
TRIFOLIUM SCHIEDEANUM S. Wats., Proc. Am. Acad. oe 
1883.—T. reflexum Schlecht., Linnaea 5:576. 1830; not L. 
“Jalapa (Schiede), and at Lerios, 45 miles east of Saltillo, [E. Palmer] (201).”” 
The locality for Schiede’s plant as given by SCHLECHTENDAL is “Prope Jala- 
pan ad latera montis Macultepec, San Andres inque graminosis.” 
A duplicate of Palmer’s plant mentioned above is in U. S. Nat. Herbarium. 
TRIFOLIUM TRIDENTATUM Lindl., Bot. Reg. sub pl. 1070. 1827- 
Lower California, Todos Santos Island, Anthony (no. 194), 1897; San Quen- 
tin Bay, Palmer (no. 697), 1889. 
Trirotium WILLDENova Spreng., Syst. 3:208. 1826.—T. involu- 
cratum Orteg., Hort. Matr. Dec. 33. 1797; Willd., Sp. Pl. 3:1372- 
