Eremophila section Eremophila

Curtis, Amy L., Grierson, Pauline F., Batley, Jacqueline, Naaykens, Jeremy, Fowler, Rachael M., Severn-Ellis, Anita & Thiele, Kevin R., 2022, Resolution of the Eremophila tietkensii (Scrophulariaceae) species complex based on congruence between morphological and molecular pattern analyses, Australian Systematic Botany 35 (1), pp. 1-18 : 13

Key to species of Eremophila section Eremophila (amended from Chinnock 2007 a)

1. Leaves linear to linear-oblanceolate or lanceolate.........................2 Leaves ovate to obovate or oblanceolate.......................................8

2. Sepals separated at base...................................115. E. oppositifolia Sepals imbricate at base.................................................................3

3. Outside surface of sepals glabrous; branches and leaves green, pseudoglabrous, with hairs usually completely obscured by resin................................................................117. E. cryptothrix Outside surface of sepals pubescent; branches and leaves grey to grey-green, hairs obvious...........................................................4

4. Sepals <6.5 mm long; corolla 5.5–7.5 mm long (Qld).............................................................................................114. E. arbuscula Sepals and corolla> 7 mm long ( WA)..........................................5

5. Leaves linear-oblanceolate, channelled, <3 mm wide, very prominently tuberculate...............................................122. E. mirabilis Leaves lanceolate to oblanceolate, flattened,> 7.5 mm wide or if narrower, not prominently tuberculate......................................6

6. Flowers 1–4 per axil; corolla lilac, white, yellow, pale blue, pink or mauve, anthers included...........................................................6a Flowers 1 per axil; corolla cream or pink; anthers usually extending beyond throat.............................................................................7

6a. Leaf indumentum comprising simple, uniseriate hairs, the terminal cell much longer than the others and usually attenuate..........6b Leaf indumentum comprising simple, uniseriate hairs that are evenly septate, the terminal cell no longer than the others and with a bluntly rounded tip...................................... E. naaykensii

6b. Ovary densely glandular-puberulous with scattered or numerous longer eglandular hairs, style glabrous or with a few scattered, simple, spreading, short eglandular hairs.................. E. tietkensii Ovary densely sericeous with yellow, simple, eglandular hairs; style with sparse, long spreading, eglandular hairs for most of its length............................................................................. E. hurteri

7. Hairs on vegetative parts matted, posterior sepal oblong to oblanceolate, broadly acute..........................124. E. macmilliana Hairs on vegetative parts not matted, posterior sepal similar to anterior pair, widely ovate to suborbicular or sepals subequal, oblanceolate, obtuse........................................123. E. platycalyx

8. Corolla white or cream sometimes tinged bluish-green on lobes..........................................................................................................9 Corolla pale blue, blue, pale lilac, violet, pale mauve, pink or whitetinged lilac................................................................................11

9. Fruit glabrous; corolla white.................................116 E. reticulata Fruit pubescent; corolla cream sometimes tinged bluish-green.........................................................................................................10

10. Leaves very widely depressed, ovate, obtuse, very rigid; ovary/fruit with eglandular hairs..............................................120. E. rigida Leaves obovate, acute, flexible; ovary/fruit with eglandular hairs.................................................................123. E. platycalyx

11. Leaves subopposite to opposite, widely depressed ovate, flabellate or spathulate ( SA; NT)...................................118. E. rotundifolia Leaves alternate or irregularly opposite, ovate, spathulate or oblanceolate ( WA)....................................................................12

12. Branches sulcate; sepals unequal, outer 3 broader than inner pair, oblanceolate to obovate; flowers 1, rarely 2, per axil...........................................................................................119. E. spathulata Branches non-sulcate; sepals subequal, elliptic to oblanceolate; flowers 2–4 per axil............................................121. E. tietkensii