Navarretia paradoxiclara, L. A. Johnson & D. Gowen, 2013

Johnson, Leigh A., Gowen, David & Jensen, Angela B., 2013, Cryptic speciation: distinguishing serpentine affiliated sister species Navarretia paradoxiclara and N. paradoxinota from N. intertexta (Polemoniaceae), Phytotaxa 91 (2), pp. 27-38 : 36

Key distinguishing Navarretia paradoxiclara and N. paradoxinota from N. inte rtexta and N. propinqua

This short key effectively replaces lead 20 in the recent treatment of Navarretia in California (Johnson 2012), and distinguishes the new species from their closest morphological allies.

1. Plants generally mounding with multiple heads in close proximity; corolla (4.5−) 5–6.5 mm long; stamens exserted ± to corolla tips ................................................................................................................................ Navarretia propinqua

- Plants generally upright, or much branched with multiple heads well separated along stems; corolla 6–13.5 mm long ...................................................................................................................................................................................... 2

2. Corolla 6–8(−13) mm long; anthers exserted beyond corolla tips when flowers pressed ............ Navarretia intertexta

- Corolla 6.5–13.5 mm long; anthers less than or equal to corolla lobe tips when pressed ............................................ 3

3. Corolla 9.5–13.5 mm long, pale blue to white; corolla lobes 1.25–2.5 mm wide, broadly ovate; plants of Calaveras and Tuolumne Counties ......................................................................................................... Navarretia paradoxiclara

- Corolla 6.5–9.5 mm long, white; corolla lobes 0.5–1.25 mm wide, narrowly ovate. Plants of Lake, Napa, and Colusa Counties .................................................................................................................................. Navarretia paradoxinota