118 



Collected by Mr. C. G. Pringle iu barrancas above Cuernavaca, Morelos, altitude 

 1,808 meters, November 14, 1895 (No. (3207). 

 The leaves give forth a very offensive odor. 

 Near Z. Imoncello, but distinct. 



NOTES ON BURSEKACEAE. 



The genus Bursera up to 1883 was in » very confused condition. In 

 this year appeared Dr. A. Engler's monograph of the genus, 1 in which 

 39 species are described. Since then, however, a number of new 

 species have come to light in Mexico, of which the following is a list: 

 Bursera cerasifolia Brandegee, Proc. Cal. Acad. ser. 2, 3: 121. 1891. 



Duplicate type iu the National Herbarium. 

 Bursera fragilis Wats. Proc. Am. Acad. 21: 422. 1886. 



Duplicate type (No. 72) in the National Herbarium. 

 Bursera glabrescens Hose, Contr. Nat. Herb. 3: 313. 1895. Bursera palmeri glah- 

 reacens Wats. Proc. Am. Acad. 25: 145. 1890. 



Duplicate type (No. 77) in the National Herbarium. 



This species may yet prove to be B. jorMewi* (H. B. K.) Engler. 

 Bursera jonesii Pose, Contr. Nat. Hejb. 3 : 314. 1895. 



Type (No. 491) in the National Herbarium. 

 Bursera aptera Ramirez, Anales Inst, Med. Nac. 2: Hi. 1896. 

 Bursera trijuga Ramirez, Anales Inst. Med. Nac. 2 : 16. 1896. 

 Bursera morelensis Ramirez, Anales lust. Med. Nac. 2 : 17. 1896. 

 Bursera laxiflora Wats. Proc. Am. Acad. 21:44. 1889. 



Duplicate type (No. 70) in the National Herbarium. 

 Bursera nelsoni Rose, Contr. Nat. Herb. 3:314. 1895. 



Type (No. 493) in the National Herbarium. 

 Bursera palmeri Wats. Proc. Am. Acad. 22:402. 1887. 



Duplicate type (No. 78) in the National Herbarium. 

 Bursera pringlei Wats. Proc. Am. Acad. 2.". : 14.",. 1890. 



Duplicate type (No. 71) in the National Herbarium. 

 Bursera schaffneri Wats. Proc, Am. Acad. 22:469. 1887. 

 Bursera tenuifolia Pose. Contr. Nat, Herb. :?:314. 1895. 

 Type (No. 484) iu the National Herbarium. 



The following species have recently been acquired by the National 

 Herbarium, one of which proves to be undescribed: 



Bursera diversifolia Rose, sp. nov. 



Tree 36 to 75 dm. high; older branches glabrous, shining, reddrsh ; younger 

 branches rachis of leaves, ami inflorescence pubescent; leaflets! t.. 6 pairs, the lower 

 ones often again pinnate with 3 to 7 leaflets; the leaflets 25 mm. or less long, ovate 

 or oblon- serrate, obtuse, rarely acute, rounded at base, or the terminal sometimes 

 cuneate pubescent and somewhat shining above, paler, softly pubescent and reticu- 

 lated beneath; rachis between the leallets narrowly winged; inllorescence con- 

 tracted; fruit glabrous, 10 mm. long. 



Collected by Mr. E. W. Nelson along road from < )cuilapatoTuxtla. State ot Chiapas, 

 altitude 515 to 985 meters, August 29, 1895 (No. 3066). 



This species seems nearest B. submoniUformin. 

 Bursera bicolor (Schlecht.) P. igler in DC. Monogr. J'han. 1:53. 1883. ElaphHum 

 McoJor Schlecht. Linnaea, 17:625. 1843. 



i Iu De Candolle, Monographiae Phauerogamaruin, Vol. IV. 



