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Engellaria Iamonico in Acta Bot. Mex. 128(e1846): 4. 2021 sec. Iamonico 20211


Monotypic, segregated from Stellaria based on both molecular and morphological evidence (Iamonico 2021). Molecular data showed that Stellaria obtusa Engelm. [≡ E. obtusa (Engelm.) Iamonico, the only member of Engellaria] is not included in the Stellaria s.s. clade, but is sister to another clade comprising the genera Honckenya, Schiedea, and Wilhelmsia. Also the morphology of S. obtusa is peculiar and different from both these three groups and the similar apetalous members of Stellaria s.s. (S. crispa, S. media, S. pallida, and S. irrigua).A

Distribution (General)

Western North America in Canada (British Columbia, Alberta), and USA (California, Colorado, Idaho, Montana, Oregon, Utah, Washington, Wyoming)B


Perennial herbs which display entire leaves, solitary flowers, usually 4 sepals (rarely 5), green, 1.5-3.5 mm long, petals absent, styles 0.3-0.5 mm long, capsule dehiscent by 6 valves, pale-green, 2-3.5 mm long, 1-2 mm wide, seeds 0.5-0.7 mm in diameter.B


A name which results from a merge of “Engelmann” (Engel-), the author who first described Stellaria obtusa and “Stellaria” (-laria).B

Common Name

English: Engelmann’s startwortB


Revised by: Duilio Iamonico


A. Iamonico, D. 2022+: Agrostemma, Augustea, Engellaria, Habrosia, Pteranthus, Polycarpon, Scleranthus. - Published online at caryophyllales.org.
B. Iamonico, D. 2021: Engellaria (Caryophyllaceae), un nuevo género norteamericano segregado de Stellaria. – Acta Botanica Mexicana 128: e1846. http://doi.org/10.21829/abm128.2021.1846