438 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



NOLINA ALTAMIRANOANA Rose, sp. nov. 



Trunk 2 to 3 meters high, crowned by a rosette of ascending leaves; 

 leaves 40 to 60 cm. long, 7 cm. broad at insertion, 2 cm. broad a little 

 above the base, thence gradually tapering into a long slender acumi- 

 nation, pale green, the margin serrulate; inflorescence 1 to 2 meters 

 long, forming a much-branched panicle; bracts subtending the flowers 

 very thin and papery; perianth of male flowers with obtuse segments; 

 female flowers with the 3 outer perianth segments persistent, 

 scarious-margined; fruiting pedicles slender, jointed near the base, 

 glabrous; fruit 3-lobed, a little broader than high, the walls very thin, 

 3-celled, each cell 2-ovuled; seeds nearly globular. 



Known only from the Valley of Mexico. 

 Specimens e.mmin ed: 



Mountains of Guadalupe, M. Bourgeau, 1865-1866 (no. 520). 



Slopes of Rio Hondo Canyon, C. G. Pringle, April 22, 1898 



(no. 6787). Blufl' above Santa Fe, C. G. Pringle, March 23, 



1899 (no. 8060, type); J. N. Rose, July 11, 1901 (no. 5388). 



Certain specimens of this species were taken by Mr. Baker to be one 



of his varieties of B. recurvata or the equivalent of Lemaire's B. stricta, 



and by Mr. Hemsley to be his Nol'ma recurvata. The habits of these 



plants, however, are very different indeed. The one here described as 



new never has a swollen base; the leaves are not very long, are rather 



stiff', and are not drooping except in age. 



PARNASSIA MEXICANA Rose, sp. nov. 



Petioles of the basal leaves slender, 2 to 4 cm. long; blades oblong, 

 obtuse, cuneate at base, 4 to 6 cm. long, 1 to 2 cm. broad; scape 30 to 

 35 cm. high; bract ovate, obtuse, borne below the middle of the scape; 

 sepals oblong, obtuse, 5 to 7-nerved, 7 mm. long; petals oblong, 12 mm. 

 long, 5-nerved, fimbriate towards the base; tilaments stout; stamjnodial 

 scale broad, with several long gland-tipped filaments. 



Collected by C. H. T. Townsend and C. M. Barber, in the Sierra 

 Madre near Chuichupa, Chihuahua, September 6, 1889 (no. 431). 



This species is probabl}^ nearest P. Intei'media.^ but it has very 

 different leaves. 



HEUCHERA ACUTIFOLIA Rose, sp. nov. 



Perennial, w4th strong, erect or ascending rootstock; flowering 

 branches 30 to 50 cm. high, green, slightly hairy below, above some- 

 what glandular-puberulent; blades of the basal leaves 3 to 6 cm. wide, 

 cordate, somewhat 3 to 5 lobed, the lobes triangular and more or less 

 acute, when young very pubescent on both sides, sharply toothed, the 

 teeth tipped with long hairs; petioles usual]}" much longer than the 

 blades, sometimes 10 cm. long, densely clothed with long spreading 



