Hebecarpa barbeyana
Hebecarpa
blue milkwort
usually erect, sometimes laxly so (rarely procumbent), hairs incurved (rarely glabrate).
prostrate or decumbent to erect, usually densely pubescent, rarely glabrate.
blade ovate, elliptic, spatulate, or linear proximally, to elliptic, lanceolate, or linear distally (often longer than proximal ones), 4–45(–65) × 1.5–4(–6) mm, base usually acute, sometimes cuneate or obtuse, apex acute to acuminate or obtuse, surfaces not translucent-punctate, hairs incurved.
alternate; mostly sessile or subsessile (petiole to 2 mm in H. ovatifolia);
sometimes dimorphic (proximal different from distal);
blade surfaces not punctate (except translucent-punctate in H. macradenia and H. punctata), pubescent.
terminal or leaf-opposed, racemes, loose, 2–12 × 0.9–1.4 cm;
peduncle 0.5–1.5 cm;
bracts linear to narrowly ovate.
terminal, axillary, or leaf-opposed, usually racemes, sometimes 1 or 2(–4)-flowered;
peduncle present or absent;
bracts deciduous.
1–5 mm, pubescent.
present.
purplish, wings rarely yellow, keel distally yellow or yellowish green, 3.5–6 mm;
sepals lanceolate, 2.2–3.5 mm;
wings ovate to suborbiculate, 3.5–5.5 × 2.4–4 mm, sparsely pubescent;
keel 4–5.7 mm, pubescent.
usually purple, pink, yellow, greenish yellow, rarely whitish, wings sometimes cream, yellowish, or greenish, keel sometimes yellow or yellowish green distally, chasmogamous, 3–8 mm;
sepals deciduous or upper 1 sometimes tardily so or subpersistent (in H. macradenia and H. punctata), distinct, pubescent;
wings deciduous, 3.5–6(–7.5) mm, pubescent;
keel not beaked or crested, sometimes bluntly 3-lobed, pubescent or glabrate (in H. obscura);
stamens usually 8, sometimes 7 (in H. macradenia), not grouped;
ovary 2-loculed.
capsules, dehiscent, margins not winged (except sometimes narrowly winged in H. barbeyana), not punctate (except translucent-punctate in H. macradenia and H. punctata), pubescent to glabrate or glabrous and ciliolate.
oblong, oblong-ovoid, broadly ellipsoid, or subglobose, 5–10(–11) ×4–7 mm, not translucent-punctate, glabrous and ciliolate, margins sometimes narrowly winged.
4–4.5 mm;
aril 0.6–1 mm, lobes vestigial or to 1/4 length of seed.
pubescent, arillate.
= 30.
Hebecarpa barbeyana
Hebecarpa
Hebecarpa barbeyana is very similar to 7. H. rectipilis; see that species for comments.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Species 40–70 (7 in the flora).
Most species of Hebecarpa are Mexican, the center of diversity for this group. The seven in the flora area occur mostly in arid and semi-arid areas of the southwestern United States, representing contiguous northern expansions of their ranges in Mexico. A few species range into Central America and Andean South America, but they are not the basalmost species, suggesting that they have arrived in these regions secondarily.
Several species complexes in this group are in serious need of revision, with overly fine, historical splitting (often based on few specimens); thus the total number of species is probably fewer than 50.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf blade surfaces and capsules densely translucent-punctate from internal cavities appearing as pustular glands 0.2–0.4 mm diam. | → 2 |
2. Leaf blades linear-oblong to oblong-lanceolate, narrowly ovate, or linear. | H. macradenia |
2. Leaf blades usually obovate, rarely suborbiculate to broadly elliptic. | H. punctata |
1. Leaf blade surfaces and capsules not translucent-punctate. | → 3 |
3. Capsules densely pubescent to glabrate. | H. obscura |
3. Capsules glabrous, margins ciliolate. | → 4 |
4. Stems and leaves with incurved hairs. | → 5 |
5. Middle and distal leaf blades usually 1.5–4(–6) mm wide, elliptic, lanceolate, or linear; capsules 5–10(–11) mm. | H. barbeyana |
5. Middle and distal leaf blades 4–7 mm wide, ovate, elliptic, or obovate; capsules 9–12 mm. | H. palmeri |
4. Stems and leaves with spreading hairs. | → 6 |
6. Leaf blades ovate to ovate-oblong or elliptic; capsules 8.5–13 mm. | H. ovatifolia |
6. Leaf blades ovate, elliptic, spatulate, or linear proximally, elliptic, lanceolate, or linear distally (often longer than proximal ones); capsules 6–8 mm. | H. rectipilis |
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