181 



of the leaves, in the calyx lobes being leas ovate, acuminate, the calyx less densely 

 stellate-tomentose, the fruit slightly different, etc. This species is named for Mr. 

 J. M. Greenman, who has assisted in separating it from M. schaffneri. 

 Malvastrum tricuspidatum Gray. PI. Wright. 1: 16. 1852. 



Collected by J. N. Rose between Rosario and Concepcion, Sinaloa, July 27, 1897 

 (No. 3263); at Rosario, July 11 (No. 1597), and at San Juan Capistrano, Zacatecas, 

 August 20 (No. 2446). 

 Melothria scabra Naud. Ann. Sci. Nat. ser. 5, 6: 10. 1866. 



Collected by J. N. Rose near Acaponeta, Territorio de Tcpic, June 23 to 30, 1897 

 (No. 3142). 



A rather peculiar form, with leaves nearly orbicular in outline, either slightly or 

 deeply 5-lobed. A somewhat similar form was collected by Dr. Palmer near Aca- 

 pulco, Guerrero, in 1895. 

 Robinsonella discolor Rose tfc Baker f., sp. nov. 



Tree 6 to 9 m. high, glabrous, with brownish gray cortex; leaves ovate, cuspidate, 

 subacuminate, blunt at the apex, cordate or snbeordate at base, sometimes unequal- 

 sided, 4 to 5 cm. long, 2.5 to nearly 4 cm. broad, on petioles 1 to 1.5 cm. long, discol- 

 orous (covered with a fine but dense tomentum), green above, canescent below ; sepals 

 ovate; petals white, 7 nam. long; fruit borne on pedicels, often about 2 cm. long 

 toward the extremities of short lateral branchlets and at the apex; pedicels articu- 

 lated about the middle, solitary or in pairs; calyx about two-thirds the length of the 

 carpels ; sepals ovate, acute, pubcrulous ; carpels about 12, stellatcly hairy, especially 

 on the back, not quite 1 cm. long; seed dark brown, subtriangular, hairy in parts. 



Collected by Mr. C. G. Pringle on limestone hills, Las Palmas, San Luis Potosi, 

 altitude 90 meters, April 27, 1894 (No. 5767), and March 2, 1899 (No. 8007). 



This species differs from II. cordata Rose & Baker f. in not having villous petioles, 

 in the color and character of the pubescence on the loaves, etc. Subscribers to Mr. 

 Pringle's elegant sets of Mexican plants will doubtless find it in this year's distribu- 

 tion. Mr. Pringle states that this species is a slender tree found on the mountains 

 of eastern San Luis Potosi, thence to Tampico. 



Adding this species to those described in Garden and Forest for June, 1897, the 

 genus will now consist of It. cordata Rose & Baker f., It. divergent Rose &, Baker f., 

 It. lindeniatia (Turcz.) Rose & Baker f., and It. discolor. Tho type of the last named 

 will be found in the U. S. National Herbarium, Washington. 



Fragments of still another species have recently been sent to Mr. Rose from Hon- 

 duras, and while there is no question as to its generic position and its distinctness 

 from tho four other species, yet it seems best to withhold it until further material 

 has come to light. Collectors in Central America and curators of Herbaria will 

 confer a great favor if they can communicate any material which will help us diag- 

 nose this species fully. 



NOTES ON PASSIFL0RA. 



Passiflora colimensis Masters & Rose, sp. nov. Plate XX. 



Annua? debilis ramis sulcato-striatis, setulosis; petiolis ad 5 cm. gracilibus versus 

 apicem biglandulosis, laminis circa 4 cm. long. 5 cm. lat. membranaceis pilosulis 

 sen glabrescentibus basi cuneatis cordato-bilobis (lobis rotundatis), 3-nerviis ad 

 medium 3-lobis lobis obtusiusculis ad margines remote dentatis; stipulis minutis 

 deciduis; pedunculis axillaribus petiolis brevioribus bracteis parvis setaceis 

 remotiusculis munitis; floribus circa 4 cm. diam. tube lato glabro poculiformi; 

 sepalis herbaceis e basi lato lanceolatis; petalis albidis sepalis dimidio brevioribus; 

 corona fauciali tilamentosa filis 1-seriatis petalis aeqnilongis hguliformibus basi 

 violaceo fasciatis; corona media meinbranacea mllexa margine dentata; ovario 



