Euphrasia oakesii

Wettstein

Monogr. Euphrasia, 142, plate 4, figs. 211–215; plate 12, fig. 6. 1896.

Common names: Oakes’s eyebright euphraise d'Oakes’
Endemic
Treatment appears in FNA Volume 17. Treatment on page 499. Mentioned on page 492, 493.

Stems simple, sometimes branched, to 8 (–12) cm; branches 1 or 2 pairs, from basal cauline nodes; cauline internode lengths 2–3 times subtending leaves. Leaves: blade obovate or orbiculate, 2–6 (–8) mm, base cuneate, margins incised-crenate to incised-dentate, teeth 1–3 (or 4) pairs, apices obtuse or acute. Inflorescences capitate, beginning at node 4 or 5; proximal internode lengths 0.5–1 (–1.5) times bracts; bracts green or with slight bronze tinge or suffused with purple adaxially especially near margins, broader than leaves, ovate to obovate, length not more than 2 times width, 3–7 mm, base cuneate, surfaces hirsute and hairs eglandular, teeth 2–4 pairs, as long as wide, apices obtuse or acute, sinuses between teeth rounded or acute. Flowers: calyx lobes falcate, apex obtuse; corolla brownish purple, purple, or lilac with darker lines, abaxial side of tube and base of abaxial lip sometimes yellow, 3–4 mm, lips equal. Capsules obovate or broadly elliptic, 4–4.5 mm, apex emarginate.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Corollas purple or lilac with darker lines; bracts adaxially suffused with purple especially near margins; leaf teeth apices obtuse, sinuses between teeth rounded. Euphrasia oakesii var. oakesii
1 Corollas brownish purple; bracts green or adaxially slightly bronze tinged; leaf teeth apices acute, sinuses between teeth acute. Euphrasia oakesii var. williamsii

"broader" is not a number."wide" is not a number.

... more about "Euphrasia oakesii"
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Obtuse (?) +  and Acute (?) +
Galina Gussarova +
Wettstein +
cuneate +
acute +  and rounded +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
orbiculate;obovate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not leathery +  and fleshy +
alternate +  and subopposite +
suffused;bronze tinge;with slight;green +
ovate +  and obovate +
2 +  and 1 +
tubular +  and flattened +
not accrescent +
elliptic;obovate +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
2-3 times subtending leaves +
Oakes’s eyebright +  and euphraise d'Oakes’ +
lilac +, purple +  and brownish purple +
Que. +, Maine +  and N.H. +
2 +  and 1 +
indehiscent +, septicidal +, loculicidal +  and dehiscence +
axillary +  and terminal +
deciduous +
triangular +
incised-dentate +
short-ciliate +  and glabrous +
incised-crenate +
tenuinucellate +  and unitegmic +
campylotropous-like +
0.5-1(-1.5) times bracts +
Monogr. Euphrasia, +
10 +  and 18 +
fusiform +
subequal +
branched +  and simple +
aerial +  and subterranean +
0 cm0 mm <br />0 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not fleshy +
Euphrasia oakesii +
Euphrasia +
species +
2 +  and 4 +