Linum australe
Linum lundellii
southern flax
Sullivan City flax
stiffly ascending-spreading, few to many-branched.
spreading to erect, few-branched.
alternate, appressed;
stipular glands present at basal nodes or throughout;
blade linear, 7–20 × 0.5–l.9 mm, margins entire, not ciliate, apex aristate.
alternate, spreading;
stipular glands moderately developed at proximal nodes, absent on distal nodes;
blade linear, 5–30 × 0.5–1.5 mm, margins entire, not ciliate, apex acute.
racemes.
panicles.
3–15 mm.
5–13 mm.
sepals deciduous, lanceolate to narrowly ovate, 4–7 mm, margins scarious, delicately glandular-toothed, apex aristate;
petals yellow to yellow-orange throughout, oblanceolate to narrowly obovate, 5–10 mm;
stamens (3–)4–7 mm;
anthers 0.4–1 mm;
staminodia present or absent;
styles connate nearly to apex, 2–5.7 mm;
stigmas green, capitate.
sepals deciduous, linear-lanceolate to lanceolate, 4–12 mm, margins narrowly scarious, glandular-toothed, apex acute to acuminate;
petals yellow to orange salmon, faintly maroon banded near base, obcordate, 7–12 mm;
stamens 4–5 mm;
anthers 1–1.5 mm;
staminodia absent;
styles connate nearly to apex, 3–4 mm;
stigmas dark, capitate.
ovoid, 3.2–4.5 × 2.5–3.4 mm, relatively thick-walled and with characteristic thickened areas at apex in region of true septa, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins ciliate.
ovoid, 3.3–4 × 2.6–3.1 mm, apex obtuse, dehiscing into 5, 2-seeded segments, segments persistent on plant, false septa complete, proximal part membranaceous, not terminating in loose fringe, distal part cartilaginous, margins not ciliate.
2–3 × 0.8–1.3 mm.
2.5–2.7 × 1.1 mm.
= 30.
Linum australe
Linum lundellii
Varieties 2 (2 in the flora).
The stems of Linum australe are strongly ridged-sulcate to ribbed, especially distally. The corollas are broadly funnelform; petals are yellow to yellow-orange; stamens and styles are yellow; stigmas are bright to olive green. Staminodia in L. australe are short, deltoid, usually two between each pair of stamens, sometimes one or absent. Linum australe is the only species in its range that is glabrous beyond the base and has connate styles. It differs from L. aristatum, which it overlaps in the southern part of the range, in being much more highly branched and having more slender capsules. C. M. Rogers (1984) noted a compact form found in sunny areas from Wyoming northward that warrants more study.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Linum lundellii occurs in southern Texas and adjacent Tamaulipas (the collection from Nuevo León, Mueller 470, TEX, made at 2400 m, may be misidentified); it can be distinguished from other species by its relatively very short styles. C. M. Rogers (1968) identified a variable population of yellow-flowered plants that he included in L. berlandieri var. filifloium (then treated as L. rigidum var. filifolium). As a result of subsequent study of these plants, he concluded that L. lundellii and L. elongatum should be recognized as separate species. Rogers (1979) compared garden-grown plants of these three taxa and observed that the anthers of L. lundellii are at the same level as the stigmas at anthesis and that pollen had already been deposited on stigmas when the flowers opened, whereas styles of L. berlandieri var. filifolium and L. elongatum are much longer than the stamens and pollen is not shed before anthesis.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stipular glands present only at proximal nodes; stamens (3–)4–5 mm; styles (2–)2.7–3.3(–4) mm. | var. australe |
1. Stipular glands present at nodes throughout plant; stamens 5–7 mm; styles 3.6–5.7 mm. | var. glandulosum |
CalFlora
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
