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Euphrasia collina R.Br.
Family Orobanchaceae
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.


Flower
Photo Tanja Lenz

Flowering: spring–summer.

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.
AVH map***

Text by W. R. Barker
Taxon concept:

Taxa not yet included in identification key
Euphrasia collina subsp. glacialis,    Euphrasia collina subsp. speciosa

 Key to the subspecies 
1Outer surface of calyx glabrous except for a small area below each cleft2
Outer surface of calyx hairy4
2Uppermost leaves of main inflorescence-bearing axes usually with 1–3 pairs of teeth; base of plant usually hairy with non-glandular hairs, rarely glandular hairs3
Uppermost leaves of main inflorescence-bearing axes with 4–6 pairs of teeth; base of plant with glandular hairs
                       Back to 1
subsp. nandewarensis
3Uppermost leaves of main axes usually 2.0–4.2 mm wide usually only with one pair of teeth; lower corolla lobes usually emarginate to truncate, rarely obtusesubsp. collina
subsp. paludosa
                       Back to
4Bracts and outer surface of calyx hairy with non-glandular hairssubsp. muelleri
Bracts and outer surface of calyx with glandular hairs, sometimes mixed with non-glandular hairs
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5
5Glandular indumentum on external surface of calyz, minute up to 0.1 mm longsubsp. paludosa
Glandular indumentum on external surface of calyx >0.1 mm long
                       Back to 4
6
6Uppermost leaves on main inflorescence-bearing axes usually with 1 or 2 pairs of teethsubsp. gracilis
Uppermost leaves of main inflorescence-bearing axes usually with 2–4 pairs of teeth
                       Back to 5
7
7The number of upper internodes on main inflorescence bearing axes as long as or longer than upper leaves usually < 4, longest internode 0.5–1.8 times the length of the upper leavessubsp. 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
                       Back to 6
8
8Seeds usually 1.1–1.7 mm long, anthers 1.8–2.6 mm long; yellow blotch on lower corolla lobe always presentsubsp. diversicolor
subsp. speciosa
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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
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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