Euphrasia farlowii

(B. L. Robinson) Gussarova

J. Bot. Res. Inst. Texas 11: 290. 2017.

Common names: Farlow’s eyebright
IllustratedEndemic
Basionyms: Euphrasia randii var. farlowii B. L. Robinson Rhodora 3: 274. 1901
Synonyms: E. purpurea var. farlowii (B. L. Robinson) Fernald & Wiegand
Treatment appears in FNA Volume 17. Treatment on page 500. Mentioned on page 492, 494, 499.

Stems simple or branched, to 9 (–12) cm; branches 1–3 pairs, ascending, from basal cauline nodes; cauline internode lengths 1–2 times subtending leaves. Leaves: blade orbiculate to triangular-ovate or oval, 2–4 (–6) mm, margins crenate to incised-crenate, teeth 1–4 pairs, apices obtuse to subacute. Inflorescences sparsely spicate, not 4-angled, beginning at node 4–6, proximal internode lengths 1–1.5 times bracts; bracts green or suffused with purple, as broad as leaves, ovate or oval, length not more than 2 times width, 2–4 mm, base round, surfaces coarsely, densely hirsute with short-eglandular hairs, teeth 3–5 pairs, as long as wide, apices obtuse to acute, sinuses between teeth acute. Flowers: calyx lobes straight, apex acute; corolla white or cream, rarely purple, adaxial lip lilac or purple, 2.5–4.5 mm, lips moreorless equal. Capsules oval to oblong or obovate, 2.5–4 mm, apex retuse to emarginate.


Phenology: Flowering mid summer–fall.
Habitat: Dry, grassy habitats on sandstone or limestone barrens, rocks, ledges, sandy beaches.
Elevation: 0–300 m.

Distribution

N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Maine.

Discussion

Euphrasia farlowii differs from E. randii by its compact growth with condensed (versus elongated) cauline internodes and growth on calcareous soils versus non-calcareous soils (G. Gussarova 2017).

Selected References

None.

Lower Taxa

None.

"wide" is not a number.

... more about "Euphrasia farlowii"
purple +  and lilac +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Galina Gussarova +
(B. L. Robinson) Gussarova +
Euphrasia randii var. farlowii +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
orbiculate;triangular-ovate or oval +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not leathery +  and fleshy +
alternate +  and subopposite +
suffused with purple;green +
oval +  and ovate +
1 +  and 3 +
tubular +  and flattened +
not accrescent +
oval;oblong or obovate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1-2 times subtending leaves +
Farlow’s eyebright +
cream +  and white +
N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +  and Maine. +
0–300 m. +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
Dry, grassy habitats on sandstone or limestone barrens, rocks, ledges, sandy beaches. +
short-eglandular +
axillary +  and terminal +
deciduous +
triangular +
short-ciliate +  and glabrous +
crenate +  and incised-crenate +
tenuinucellate +  and unitegmic +
campylotropous-like +
Flowering mid summer–fall. +
1-1.5 times bracts +
J. Bot. Res. Inst. Texas +
10 +  and 18 +
fusiform +
Illustrated +  and Endemic +
subequal +
branched +  and simple +
aerial +  and subterranean +
0 cm0 mm <br />0 m <br /> (9 cm90 mm <br />0.09 m <br />) +
not fleshy +
E. purpurea var. farlowii +
Euphrasia farlowii +
Euphrasia +
species +
3 +  and 5 +