Camissoniopsis guadalupensis subsp. clementiana
Onagraceae subfam. onagroideae
erect, with branches usually arising near base, 2–18(–35) cm.
1.2–3.8(–9.5) × 0.5–1.2(–1.8) cm;
petiole 0–3 cm;
blade (basal and proximal cauline) narrowly elliptic, (cauline) narrowly ovate, base attenuate, margins sparsely and inconspicuously denticulate, apex (basal) acute, (cauline) obtuse, rounded, or truncate.
stipules present or absent.
opening near sunrise;
floral tube 1.6–2.4 mm;
sepals 1.9–3.2 mm;
petals yellow, each with 1 red dot near base, 2.8–4.2 mm; episepalous filaments 1.3–2.3 mm, epipetalous filaments 0.4–1.6 mm, anthers 0.4–0.8 mm, less than 5% of pollen grains 4- or 5-pored;
style 3.2–4.5 mm, stigma surrounded by anthers at anthesis.
floral tube present or, rarely, absent;
sepals 2 or 4 (very rarely 3), deciduous with floral tube, petals, and stamens;
petals yellow, white, pink, red, rarely in combination.
stout, straight or slightly curved outward, 4-angled, 10–18 × 2.8–3.5 mm, deeply grooved along lines of dehiscence.
0.7–0.9 mm.
= 14.
Camissoniopsis guadalupensis subsp. clementiana
Onagraceae subfam. onagroideae
Subspecies clementiana is restricted to San Clemente Island, Los Angeles County, where it is common on dunes around the north end and down the west shore, perhaps to the south end.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Genera 21, species 582 (16 genera, 246 species in the flora).
Onagroideae encompass the main lineage of the family, after the early branching of Ludwigia (R. A. Levin et al. 2003, 2004). This large and diverse lineage is distinguished by the presence of a floral tube beyond the apex of the ovary; sepals deciduous with the floral tube, petals, and stamens; pollen shed in monads (or tetrads in Chylismia sect. Lignothera and all but one species of Epilobium); ovular vascular system exclusively transseptal (R. H. Eyde 1981); ovule archesporium multicellular (H. Tobe and P. H. Raven 1996); and change in base chromosome number from x = 8 in Ludwigia to x = 10 or x = 11 at the base of Onagroideae (Raven 1979; Levin et al. 2003). Molecular work (Levin et al. 2003, 2004) substantially supports the traditional tribal classification (P. A. Munz 1965; Raven 1979, 1988); tribes are recognized to delimit major branches within the phylogeny of Onagroideae, where the branches comprise strongly supported monophyletic groups of one or more genera.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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