248 New Spectes of Mexican Plants. [ZOE 
Collected on Cerro de la Yerba, growing among rocks. No. 
2680. 
Mimosa Luisana. Frutex ramosus, ramis fuscis, aculeis com- 
pressis recurvatis atrorubescentibus 5 mm.longis armatis: stipu- 
lis 3.5 mm. longis lanceolatis: petiolis 5 mm. longis et rhachidi- 
bus foliorum 1-1.5 cm. longis inarmatis, tomentosis: pinnis 4-5 
jugis: foliolis 4-5—-jugis oblongo-ovatis acuminatis sessilibus 
ptubescentibus basi obliquis, 4 mm. longis, 2 mm. latis: floribus 
spicatis; spicis circa 2 cm. longis, longe pedicellatis in racemis 
longis terminalibus dispositis; corolla 4 mm. longa extus sericeo- 
pubescente ad medium in dentes 5 secta: staminibus 10: legu- 
minibus 3-4 cm. longis, 3-4 mm. latis, abrupte et longe acu- 
‘minatis, curvatis, pubescentibus; seminibus 5-8; segmentis 
quadratis concavo-convexis; replo valido. 
The specimens are fruiting with but few flowers remaining, 
The legumes and leaflets somewhat resemble those of M/. calcicola, 
but the inflorescence is very different. Collected in arroyos near 
San Luis, Puebla. No. 2647. 
Phaseolus striatus. Volubilis, caulibus parce pubescentibus: 
foliolis lateralibus obliquis, deltoideo-acuminatis mucronatis, 
4-4.5 cm. longis, 2-2.5 cm. latis; foliolo terminali rhomboideo-acu- 
minato; stipulis ovato-acuminatis striatis; stipellis lanceolatis 
striatis petiolis cequilongis: stipulis ovato-acuminatis: floribus 
6-8 versus apicem pedunculi pubescentis racemosis; pedicellis 
0.5-10 mm. longis; pedunculis foliis cequilongis vel superanti- 
bus; bracteolis fere glabris, late ellipsoideis, minute ciliatis, 
striatis 6 mm. longis calyce longioribus: calycis dentibus 2 supe- 
rioribus connatis truncatis, inferioribus subaequalibus truncatis 
apiculatis: corollis purpurascentibus: legumine 6 cm. longo, ! 
cm. lato, pubescente. 
Collected on Cerro dela Yerba. No. 2678. 
Bursera filicifolia. Arbor parva ramosa, cortice cinereo, 
ramulis striatis; foliis numerosis ramulos terminantibus, 2-4 cm. 
longis; foliolis 5—9-jugis, praesertim subtus tomentosis vel pubes- 
centibus, sessilibus vel petiolulis parvis alatis, ovatis, basi cunea- 
tis, crenatis, 5-ro mm. longis; alis inter foliolorum juga angus- 
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