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Key to Brazoria

Lamiaceae

Brazoria

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1 Stems glabrous below inflorescence; corollas mostly 10-12 mm long; upper lobe of corolla entire and subgaleate; cocci glabrous
1 Stems pubescent below inflorescence; corollas mostly 13-28 mm long; upper lobe of corolla bifid and erect; cocci pubescent.
  2 Floral bracts ciliolate, with hairs 0.1-0.2 mm in length; mature plants often basally branched with branches recumbent at base; basal leaves usually persistent, oblanceolate to spatulate; [s. TX]
  2 Floral bracts ciliate, with hairs 1-2 mm in length; mature plants often not basally branched, or, if so, with branches immediately ascending from base; lower leaves rarely persistent, usually oblong to oblong-oblanceolate; [sc. to ne. TX].
(c) Smith, Jake - CC-BY-NC, permission granted to NCBG
    3 Mature spikes loosely interrupted, with lower internodes mostly 8-13 mm long; lower lobes of calyces lightly pubescent to canescent at base, with most hairs reaching 0.2 mm in length, occasional hairs reaching 1.0 mm; [ne. TX]
(c) Smith, Jake - CC-BY-NC, permission granted to NCBG
    3 Mature spikes densely flowered, with lower internodes mostly 5-6 mm long; lower lobes of calyces mostly woolly-tomentose at base, with many hairs reaching 2 mm in length; [sc. TX]