Eastern Mojave Vegetation Adaxial surface of cauline leaf, Coll. No. 1036, Lactuca virosa  


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  Asteraceae Lactuca virosa
Scanned 29 Dec 2014.

Coll. No. 1036, 31 August 2013, characters observed while keying: Herbaceous annual or biennial to 1.5 m.; Sap copious milky; Leaves cauline widely clasping; Head with only ray flowers (liguliflorus); Receptacle epaleate; Pappus of bristles, smooth; Corolla yellow; Fruit ±compressed, beaked, slender, 5 ribs per face, wing-margined.

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Other photos about Species - Asteraceae or Lactuca virosa.


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Date and time this page was prepared: 7/13/2024 8:18:25 AM