Engellaria obtusa

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Engellaria obtusa

Engellaria obtusa (Engelm.) Iamonico in Acta Bot. Mex. 128(e1846): 6. 2021 sec. Iamonico 20211
  • ≡Stellaria obtusa Engelm. in Bot. Gaz. 7: 5. 1882 syn. sec. Iamonico 20211
  • ≡Alsine obtusa (Engelm.) Rose in Contr. U.S. Natl. Herb. 3: 569. 1896 syn. sec. Iamonico 20211
    • Lectotype (designated by Iamonico, D. 2021: 62): United States of America, Colorado, Anthracite Ck (Creek), Colorado, 1881, T. Brandegee s.n. (UC: UC120055); isolectotypes: GH00037991, GH00037990, NY00353081, YU001676
  • =Stellaria washingtoniana B.L.Rob. in Bot. Gaz. 25: 166. 1898 syn. sec. Iamonico 20213
  • ≡Alsine washingtoniana (B.L.Rob.) A.Heller in Cat. N. Amer. Pl., ed. 2: 4. 1900 syn. sec. Iamonico 20213
    • Lectotype (designated by Holmgren, N. H. & Holmgren, P. K. 20124): United States of America, Alder wood, Upper Valley of the Nesqually, 8 Jun 1895, Allen 157 (GH: GH0003799); isolectotypes: BM000884641, CAN171422, CAS5630, CS106217, DOV0008406, F0053353F, FV0053354F, GH00037994, plant on the left, K000723568, MIN1002528, MO2196020, MSC0092930, NY353086, RM0002200, US00611211, US00103238, VT053289
  • 3. 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, 4. Holmgren, N. H. & Holmgren, P. K. 2012 – In: Cronquist, A.J. & al., Intermount. Fl. 2A
  • =Alsine viridula Piper in Contr. U.S. Natl. Herb. 16: 267. 1913 syn. sec. Iamonico 20215
  • ≡Stellaria viridula (Piper) H.St.John in St. John & Warren, Prelim. List Pl. Kaniksu Nat. For. 1: 6. 1925 syn. sec. Iamonico 20215
    • Lectotype (designated by Iamonico, D. 2015: 66): United States of America, Idaho, ridges south from Wiessners Peak (Mount Wiessner), alt. 1700 m, 28 Jul 1896, Leiberg 1396 (US: US00103237); isotypes: CAS0000308, F281494, GH00037575, NY342333, OSC04665, RM0002118, UC154382
  • –Alsine obtusa (Engelm.) Howell, Fl. N. W. Amer. 1: 83. 1897, nom. inval., syn. sec. Iamonico 20217

Content

Habitat

Moist areas in woods, shaded edges of creeks, slopes; altitude: 300-3400 m a.s.l.A

Description

Perennial herbs, rhizomatous (rhizome usually white), creeping (hemicryptophytes); stems prostrate, often matted (not forming cushions), branched, (3-)5-20(-25) cm long, with internodes as long as or longer than the leaves, usually glabrous; leaves sessile or shortly petiolate with blades ovate (7-9(-12) × 2-12 mm (sizes are given as length × width through the text)), glabrous (ciliate near the base), shiny, margins entire and ciliate in the proximal part, base rounded or cuneate, apex acute; flowers solitary, axillary, without bracts, 1.5-2 mm in diameter; pedicels spreading (in fruiting stage), 3-12 mm long, glabrous; sepals usually 4 (rarely 5), with 3(-5), green with obscure dark-green veins, ovate-lanceolate, 1-1.2-(1.5) × 1.5-3.5 mm, glabrous, apex obtuse, margins scarious, narrow (3-4 times narrower than the width of the blade); stamens 8(-10); petals absent; styles usually 3, 0.3-0.5 mm long; ovary 1-loculed at maturity (rarely 3-loculed in young individuals); ovules numerous; capsules pale-green, globose, 2-3.5 × 1-2 mm, about 2 times the length of the sepals, opening by 6 valves; seeds grayish-black or dark-brown, elliptic, 0.5-0.7 mm in diameter, finely reticulate.A

Habitat

Moist areas in woods, shaded edges of creeks, slopes; altitude: 300-3400 m a.s.l.A

Bibliography

A. 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