Pringle's Goldenrod
Solidago pringlei Fernald occurs in the vicinity of streams in central western Nuevo Leon and adjacent Coahuila, Mexico and appears to be relatively rare. The species is closely related to S. macvaughii, S. durangensis, S. gypsophila, S. juliae. The species was included in a multivariate morphometric analysis of species in the Tortifolia group of S. subsect. Triplinerviae by Semple and Lopez Laphitz (2016). It is also likely closely related to S. veracruzensis. It includes considerable variation in the amount of lower stem pubescent (0.05-0.15 mm long hairs) which is much denser on the upper stem. Phyllaries vary from lanceolate to oblong in shape. The inflorescence is the usual shape for members of the Tortifoliae group: usually much narrower and long and overall secund conical in shape, but can be wider than long when only a few heads are present.
The name Solidago muelleri Standley is a synonym of S. pringlei (Semple and Lopez Laphitz 2016).
Solidago pringlei, S. juliae, S. altissima, and S. veracruzensis were included in a multivariate study by Semple (2018) and found to be morphologically most distinct distinct from S. altissima and most similar to S. juliae.
The chromosome number is unknown.
Last revised 15 April 2025 by J.C. Semple
© 2025 J.C. Semple, including all photographs unless otherwise indicated
1-4. Solidago pringlei. 1. Dried shoot, Villareal & Carranza 8366 TEX, Coahuila, Mexico. 2. Stems, Semple & Lopez Laphitz 2016 Fig. 8 A-D. 3. Leaves, Semple & Lopez Laphitz 2016 Fig. 8 F-J. 4. Heads, Semple & Lopez Laphitz 2016 Fig. 9 D-E.
Semple, J.C. and R. Lopez Laphitz. 2016. On Solidago gypsophila and S. pringlei (Asteraceae: Astereae) rare and not so rare Mexican endemics: a multivariate study of the Tortifolia group of S. subsect. Triplinerviae. Phytoneuron 2016-30. 1-20.
Semple, J.C. 2018. Solidago veracruzensis, a new species of goldenrod in S. subsect. Triplinerviae (Asteraceae: Astereae) from Mexico. Phytoneuron 2018-52: 1–18.