ROSE—-MEXICAN AND CENTRAL AMERICAN PLANTS. 275 
RUTACEAE. 
THE GENUS MORKILLIA. 
The following account of Morkillia, which recently appeared in the 
Smithsonian Miscellaneous Collections, is here reprinted (without 
change except in the citations) for the sake of connection with my 
other Mexican studies. 
The genus Chitonia has hitherto been represented only by material collected many 
years ago. Until now it has rested upon a single species, C. mexicana, Fruiting 
specimens of this were collected in 1905 near Tehuacin, Mexico, and in 1906 fruit 
and flowers were obtained from the same place. Some years earlier, Mr. KE. W. 
Nelson had collected in Northern Mexico . 
avery different species, which is here de- ay, QO 
7 Hy 
scribed as new. / i yw \ 
The name Chitonia of Mocifio & Sess¢ is; Xv \ \ 
j 
\ 
a homonym of the Chitonia of D. Don, and 
hence a new name is here proposed. The 
genus is named Morkillia, in honor of Mr. 
W. L. Morkill, general manager of the Mex- 
ican Southern Railroad, who has taken a 
great interest in and has contributed to the i / / 
development of our explorations in southern \ 
Mexico. \ / / 
Morkillia mexicana (Moc. & Sessé) Rose so ff 
& Painter, Smithson. Mise. Coll. 50: éb 
33. 1907. Figure 26. | 
Chitonia mexicana Moc. & Sessé; DC. Prod, F6- 26-—(@) Leaflet and (b) mut of Morkiliéa 
1: 707. 1824. mexicana. Natural size. 
Shrub 3 to 5 meters. high; young branches densely pubescent; lateral leaflets 4 
to 7 pairs, oblong, obtuse or at first acute, shortly petiolulate, very pubescent on 
both surfaces, 3 to 5 em. long; flowers 
large and showy, 8 to 9 cm. in diam- 
eter; petals strongly notched, deep 
purple; fruit 4 to 5 em. long with 4 
lateral wings, these free at the top 
and more or less ineurved, dehiscing 
when mature, exposing the red aril 
of the seeds ; seeds white with a black 
spot at the tip. 
Specimens examined: 
Puebla: Near Tehuacin, Rose & 
Painter, August 30, 1905 (no. 9992); 
J. N. & J. S. Rose, September 2, 
1906 (no. 11278); C. A. Purpus, July, 
1905 (no. 1315). 
Morkillia acuminata Rose & 
Painter, Smithson. Misc. Coll. 
50: 34. 1907. Figure 27. 
Near Morkillia mexicana, but leaflets 
paler above, ovate and acuminate, 
more densely pubescent, flowers much smaller (6 cm. or less broad), petals less 
notched, and fruit broader and nearly truncate at apex. 
Fie. 27.—(a) Leaflet and (6) fruit of Morkillia acu- 
minata. Natural size. 
