Euphrasia collina R.Br. APNI*
Description: Perennial herb or subshrub, 5–60 cm high, variable habit.
Leaves with 1–6 pairs of teeth, base narrow-cuneate to truncate.
Racemes of variable size. Calyx 3.5–16 mm long, outer surface glabrous or hairy. Corolla 9.5–16 mm long, white to purple, blue or pink, sometimes with yellow blotches on lower lip; tube glabrous at base. Stamens and filaments glabrous, lower pair 2.8–9.2 mm long, the upper pair 1.3–5.5 mm long, the area about the connectives usually hairy or rarely glabrous.
Capsule 5.5–14.5 mm long, glabrous or bristly only at apex or in upper two-thirds.
Distribution and occurrence: Grows in a wide range of habitats from coastal to alpine areas; south from Torrington district and the Nandewar Ra.
NSW subdivisions: NC, CC, SC, NT, CT, ST, NWS, CWS, SWS, NWP
Other Australian states: Vic. Tas. S.A.
Text by W. R. Barker
| ||Key to the subspecies|| |
|1||Outer surface of calyx glabrous except for a small area below each cleft||2|
|Outer surface of calyx hairy||5|
|2||Uppermost leaves of main inflorescence-bearing axes usually with 1–3 pairs of teeth; base of plant usually hairy with non-glandular hairs, rarely glandular||3|
|Uppermost leaves of main inflorescence-bearing axes with 4–6 pairs of teeth; base of plant with glandular hairs. Herb 30–50 cm high, branches hairy with glandular and non-glandular hairs. Leaves 9–18 mm long, 4–9.5 mm wide. Corolla 9.5–13.5 mm long, white or pale lilac|
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|3||Main inflorescence-bearing axes bearing branches or young shoots (sometimes very small) well above ground level||4|
|Main inflorescence-bearing axes bearing branches or young shoots (sometimes very small) near ground level.4b|
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|4||Uppermost leaves of main axes usually 2.0–4.2 mm wide usually with only 1 pair of teeth; lower corolla lobes usually emarginate to truncate, rarely obtuse. Herb or subshrub 25–60 cm high, branches hairy with 2 or 4 decurrent lines of non-glandular hairs or sometimes glabrous. Leaves 5–12 mm long. Corolla 9.5–13.5 mm long, white or mauve, pink, purple or blue with white tube, throat or extremities often with a yellow behind lowest lobe||subsp. collina|
|Uppermost leaves of main axes usually 3.4–7 mm wide, usually with 1–3 pairs of teeth; lower corolla lobes usually obtuse to truncate, sometimes shallowly emarginate, rarely emarginate. Herb 18–45 cm high; branches hairy with glandular and non-glandular hairs, sessile glands also present. Leaves 7.5–13.5 mm long. Corolla 9.5–13.5 mm long, white or pale to dark blue to purple or pink, sometimes with white area behind lower lobes, a yellow blotch often present on lower lip behind lobes|
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|5||Bracts and outer surface of calyx hairy with non-glandular hairs. Herb 20–35 cm high, branches usually forming near ground level, hairy with non-glandular hairs, usually in 2 decurrent lines. Leaves 6.5–11.5 cm long, 3–6 mm wide, margins usually with 2 or 3 pairs of teeth. Corolla 9.5–13.5 mm long, purplish or lilac, with paler tube and lower lip behind lobes||subsp. muelleri|
|Bracts and outer surface of calyx with glandular hairs, sometimes mixed with non-glandular hairs|
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|6||Glandular indumentum on external surface of calyx up to 0.1 mm long. 4b||subsp. paludosa|
|Glandular indumentum on outer surface of calyx >0.1 mm long|
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|7||Uppermost leaves of main inflorescence-bearing axes usually with 1 or 2 pairs of teeth. Herb 7–12 cm high, stems hairy with non-glandular hairs. Leaves 5.5–9 mm long, 4–6 mm wide. Corolla 10–12 mm long, white, rarely lilac in bud, with yellow blotch on lower lobe||subsp. diversicolor|
|Uppermost leaves of main inflorescence-bearing axes usually with 2–4 pairs of teeth|
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|8||The number of upper internodes on main inflorescence-bearing axes as long as or longer than upper leaves usually <4, longest internode 0.5–0.8 times the length of upper leaves. Herb 5–9 cm high, with ascending branches, hairy with glandular and non-glandular hairs. Leaves 6.5–10.5 cm long, 4.5–7 mm wide, with usually 2 or 3 pairs of teeth. Corolla 9.5–13 mm long, ± lilac to mauve-pink, tube and area behind lower lobes white with yellow blotch behind lowest lobe||subsp. lapidosa|
|The number of upper internodes on main inflorescence-bearing axes as long or longer than the upper leaves usually 4–8, the longest internode 2.2–4.0 or more times the length of the upper leaves|
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|9||Seeds usually 1.1–1.7 mm long, anthers 1.8–2.6 mm long; yellow blotch on lower corolla lip always present. Herb 15–30 cm high, branches glandular and non-glandular hairy. Leaves 8–12 mm long, 5–10 mm wide, margins with usually 2–4 pairs of teeth. Corolla 11–16 mm long, white or purplish to pink with colour confined to lobes and with tube and area behind lobes white with yellow blotch behind lowest lobe||subsp. glacialis|
|Seeds 0.4–0.9 mm long, anthers usually 1.4–1.9 mm long; yellow blotch on lower lip absent. Herb 25–40 cm high, branches with 2 or 4 decurrent lines of non-glandular hairs, with glandular hairs between decurrent lines. Leaves 5–16 mm long, 3–8 mm wide, with usually 2–5 pairs of teeth. Corolla 11–15.5 mm long, bluish to purple, mouth and tube without a yellow blotch|
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APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
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