1915] Fernald and Wiegand,— Genus Euphrasia 185 
G. Spikes occupying only the upper half or third of the stem and branches: 
corolla large, 7-9 mm. long, with dark-purple lines; lower lip with 
wide-spreading lateral lobes................... 10. E. americana. 
1. E. Oakes Wettstein, Monog. d. Gatt. Euphrasia, 142, t. 4. 
figs. 211-215, t. 12, fig. 6 (1896) and Bot. Gaz. xxii. 401 (1896); Britton 
& Brown, Ill. Fl. iii. 182, fig. 3327 (1898); Fernald, Ruopora, iii. 
176 (1901); Robinson, ibid. 272 (1901); Eggleston, Ruopora, iv. 
108 (1902); Fernald, Ruopora, ix. 163 (1907); Robinson & Fernald 
in Gray, Man. ed. 7, 733 (1908). ŒE. officinalis Oakes in Hovey's 
Mag. xiii. 217 (1847); Gray, Man. 309 (1848) as to the Oakes plant; 
J. I. & A. B. Northrop, Bull. Torr. Bot. Cl. xvii. 27 (1890), in part. 
E. pusilla Godet acc. to Gray, Man. ed. 2, 295 (1856), as to the Oakes 
plant. E. officinalis, var. tatarica Wats. & Coult. in Gray, Man. ed. 6, 
392 (1890), in part, not Benth. | E. orbicularis Townsend acc. to Wettst. 
l. c. 143 (1896). E. albimontana Boiss. acc. to Wettst. 1. c. (1896.)— 
Low, often very dwarf, 2-8 (rarely -12) em. high, usually unbranched: 
stem crisp-pubescent: leaves 2-5 pairs below the inflorescence, 
smaller than the bracts, 1.5-7 mm. long, ovate to orbicular, crisp- 
pubescent on both faces: bracts similar in shape, with rounded teeth: 
inflorescence at first distinctly capitate, in maturity globose to ellip- 
soid, 0.5-2.5 em. long, at most with the 1 or 2 lowest pairs of bracts 
becoming slightly remote: corolla 2.5-3.3 mm. long, whitish, with 
violet lines; upper lip shallowly bidentate, with narrow revolute 
entire margins; lower lip with oblong bidentulate lobes; throat 
yellow.— Exposed crests and bleak mountain summits, Labrador, 
Maine and New Hampshire. LABRADOR: on rocks, north shore of 
Battle Harbor, August 6-13, 1911, C. S. Williamson, no. 713. MAINE: 
wet shelves and crevices, 1220-1375 m. altitude, north and west 
walls of North Basin, Mt. Katahdin, July 13-14, 1900, Williams & 
Fernald. New HaMrsurnE: “in alpinis Montium Alborum,” 1844, 
Wm. Oakes; gravelly plains, summits of White Mountains, August 
16 and 28, 1877, C. G. Pringle; White Mountains, August 9, 1881, 
W. H. Manning; Crawford Path at Mt. Monroe, August 28, 1877, 
August 5, 1879, August 15, 1881, September 13, 1891, and July 8 and 
31, 1893, E. & C. E. Faxon, August 15-20, 1898, W. W. Eggleston, 
August 4, 1901, E. F. Williams; open shaly ground, head of Oakes 
Gulf, August 4, 1901, E. F. Williams & B. L. Robinson, Pl. Exsicc. 
Gray., no. 61; Oakes Gulf, about 1375 m., August 17-24, 1901, 
W. W. Eggleston, no. 2408; edge of Oakes Gulf, August 14, 1902, A. 
S. Pease. 
la. Forma lilacina, n. f., corollae lobis valde lilacinis. 
Lobes of the corolla deep lilac.— LABRADOR: exposed crests of 
limestone and calcareous sándstone terraces, Blanc Sablon, August 6, 
1910, Fernald & Wiegand, no. 3988 (TYPE in Gray Herb.). 
2. E. WirLiAMsu Robinson, Rnopona, iii. 272 (1901); Fernald, 
Ruopona, ix. 163 (1907); Robinson & Fernald in Gray, Man. ed. 7, 
