Eastern Mojave Vegetation Coll. No. 1984, Lupinus argenteus var. rubricaulis  


Home Page
If you have a question or a comment about this photograph you may write to me at: tas4@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address.
  Fabaceae Lupinus argenteus rubricaulis
Photographed 15 January 2019.

Coll. No. 1984, 23 July 2018, characters observed: Perennial herb, to 65 cm., caulescent, erect; Stem, not winged, Leaves, compound, stipules, free, 7 mm., linear, petiole, 30-32 mm., sparsely appressed hairy, blade, 65 mm. × 67 mm. wide, reduced above, leaflets, #7, 40 mm. × 11 mm. wide, oblanceolate, leaflets generally flat, some younger leaflets folded, adaxial sparse appressed hairy, more dense on mid-rib, abaxial glabrous; Inflorescence, raceme, 133 mm. × 23 mm. wide, many flowers (#34 observed), pedicels, 1.5-2.5 mm.; Calyx, asymmetric, tube 1.5 mm. + lobes 2.0 & 4.5 mm., gibbous rather than spurred; Flower, zygomorphic, banner, 7.5 mm., blue, without yellow spot, reflexed at 2/3, back, glabrous, wings, claw 2 mm. + blade 6.5 mm., white to blue, keel, 8 mm., glabrous, white to purple-black, tip, prominent erect; Ovary, 3 mm. × 0.6 mm. wide, glabrous; Style, persistent; Stigma, simple, glabrous; Fruit, 22 mm. × 6.5 mm. wide, flat, hairs, soft spreading. While this keys fairly easily to var. rubricaulis in Ackerfield (2015) and Welsh et al. (1993), neither mention red stems and petioles in Greene's (1901) original description. Rather they distinguish by the (lack of) folding of the leaflets and the habitat. Weber & Wittman (2012) do not treat varieties of L. argenteus.

Article records that use this photograph:

Other photos about Species - Fabaceae or Lupinus argenteus rubricaulis.


[Home Page]

Date and time this page was prepared: 6/16/2024 11:57:51 AM