Physaria lata |
Physaria navajoensis |
|
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Lincoln County bladderpod |
Navajo bladderpod |
|
Habit | Perennials; caudex simple, (not thickened); densely pubescent, trichomes (short-stalked), several-rayed, rays distinct, furcate or bifurcate, (tuberculate, much less so over center, often nearly smooth on lower layer). | Perennials; caudex branched, (woody, pulvinate-cespitose, forming hard, hemispherical mats, basal parts covered with persistent leaf bases); densely (silvery gray) pubescent, trichomes mostly 5-rayed, rays bifurcate, slightly fused at base, (umbonate, strongly tuberculate except nearly smooth over umbo). |
Stems | simple from base, spreading or erect, (unbranched), ca. 1 dm. |
several from base (crowded), erect, not exceeding leaves. |
Basal leaves | (petiole long, slender); blade elliptic to obovate, 3–4 cm, (base narrowing to petiole), margins entire. |
usually absent. |
Cauline leaves | (shortly petiolate); blade elliptic to obovate, 1–2 cm, margins entire. |
(petiole not differentiated from blade); blade linear-oblanceolate, 3–8(–13) mm, margins entire. |
Racemes | dense. |
(secund), dense, corymbose, (few-flowered, not or barely exceeding leaves). |
Flowers | sepals narrowly elliptic or oblong, ca. 4.5 mm, (median pair thickened apically, cucullate); petals narrowly spatulate, 7–8 mm. |
sepals (yellow-green), linear to narrowly triangular, 3.7–4.8 mm, (lateral pair subsaccate); petals (deep yellow, slightly orange in center), spatulate, 5.2–6.5 mm, (claw joined at right angle). |
Fruiting pedicels | (sigmoid), 5–8 mm. |
(ascending to divaricate-ascending, straight), 3.5–6 mm. |
Fruits | (erect, substipitate), globose, ellipsoid, or obovoid, not or slightly compressed, 3–4 mm; valves sparsely pubescent, sometimes few trichomes inside; ovules 10–12 per ovary; style 3–5 mm. |
(becoming reddish or copper-colored in age), ovate, often slightly compressed (at margins apically), 3–5 mm, (apex acute); valves (not retaining seeds after dehiscence), glabrous; (septum perforate or not); ovules 4–8 per ovary; style 1.8–3 mm. |
Seeds | flattened. |
plump or slightly flattened, (strongly mucilaginous). |
Physaria lata |
Physaria navajoensis |
|
Phenology | Flowering Apr–Jul. | Flowering May-early Jun. |
Habitat | Limestone soils and rocky places, pinyon-juniper-oak woodland and montane coniferous forest | Pinyon-juniper communities on nearly barren outcrops of Todilto Limestone |
Elevation | 2100-2900 m (6900-9500 ft) | 2200-2400 m (7200-7900 ft) |
Distribution |
NM |
AZ; NM |
Discussion | Of conservation concern. Additional research is needed to determine whether Physaria lata is a variant of P. pinetorum, with which it sometimes grows. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Physaria navajoensis is morphologically similar to 85. P. tumulosa of southern Utah, differing subtly. Physaria navajoensis has petals slightly orange at the junction of blade and claw, a sharp bend at that junction giving the flower a flat-topped appearance, and strongly mucilaginous seeds. Physaria tumulosa has pure yellow petals that gently flex at the junction of blade and claw, and seeds that are not mucilaginous. Molecular data (pers. obs.) show that these two species are not directly related. A population of plants on Deer Spring Point, Kane County, Utah, appears to be this species, but molecular data indicate that it is probably a hybrid between P. tumulosa and, most likely, P. intermedia. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 648. | FNA vol. 7, p. 651. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lesquerella lata | Lesquerella navajoensis |
Name authority | (Wooton & Standley) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) | (O’Kane) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) |
Web links |