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Rocky Mountain nailwort

Jones' nailwort

Habit Plants perennial, densely cespitose, cushion-forming; caudex much-branched, woody. Plants annual; taproot slender.
Stems

prostrate, much-branched, 5–10 cm, puberulent.

prostrate, sprawling-spreading, much-branched, 10–35 cm, short-pubescent.

Leaves

stipules ovate, 3–6 mm, apex subobtuse, entire;

blade narrowly elliptic-oblong or oblong to narrowly elliptic-oblanceolate, 2–5 × 0.2–1.8(–2) mm, fleshy, apex obtuse to subacute, glabrous.

stipules ovate, 3–7.5 mm, apex acuminate, entire;

blade oblanceolate to spatulate, 5–18 × 1.5–3.5 mm, leathery, apex obtuse to very short-cuspidate, densely appressed-pubescent.

Flowers

mostly solitary at end of shoots, almost concealed by leaves.;

flowers 5-merous, elliptic-oblong, with enlarged hypanthium and calyx straight to tapering distally, 2.5–2.8 mm, densely appressed-puberulent, sparsely so distally;

sepals whitish to green, veins absent, narrowly oblong to ovate-oblong, 1.5–1.7 mm, papery to herbaceous, margins white, 0.2–0.3 mm wide, papery, apex with subterminal awn, hood ascending as continuation of sepal, broadly rounded to notched, awn erect, white, 0.3–0.6(–1) mm, ± glabrous spine;

staminodes filiform, 0.7–0.9 mm;

style 1, cleft in distal 1/3, 0.8–1 mm.

5-merous, ± extended-urceolate, with enlarged hypanthium and calyx constricted proximally, flaring distally, 1.8–2 mm, pubescent with short, hooked hairs proximally;

sepals red-brown, often finely striped or mottled, veins absent, spatulate-obovate to suboblong, 0.8–1.3 mm, leathery to rigid, margins white, 0.1–0.2 mm wide, papery, apex terminated by awn, broadly rounded, awn divergent, 0.3–0.4 mm, broadly conic in proximal 1/3–1/2 with white, scabrous spine;

staminodes filiform, 0.5–0.6 mm;

style 1, 0.7–0.8 mm, cleft in distal 1/5.

Utricles

ovoid, 1.3–1.5 mm, smooth, glabrous.

globose, 0.8–1 mm, smooth, glabrous.

Cymes

terminal and subterminal, occasionally axillary, 3–7-flowered, congested, clusters 3–8 mm wide.

2n

= 32.

Paronychia pulvinata

Paronychia jonesii

Phenology Flowering summer. Flowering spring–summer.
Habitat Rocky slopes and summit screes in alpine regions Sandy, open grounds
Elevation 3300-4200 m (10800-13800 ft) 10-40 m (0-100 ft)
Distribution
from FNA
CO; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
TX
[BONAP county map]
Discussion

Paronychia jonesii most closely resembles P. drummondii and is known only from southeastern coastal Texas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 5, p. 40. FNA vol. 5, p. 39.
Parent taxa Caryophyllaceae > subfam. Paronychioideae > Paronychia Caryophyllaceae > subfam. Paronychioideae > Paronychia
Sibling taxa
P. ahartii, P. americana, P. argyrocoma, P. baldwinii, P. canadensis, P. chartacea, P. congesta, P. depressa, P. drummondii, P. echinulata, P. erecta, P. fastigiata, P. franciscana, P. herniarioides, P. jamesii, P. jonesii, P. lindheimeri, P. maccartii, P. monticola, P. patula, P. rugelii, P. sessiliflora, P. setacea, P. virginica, P. wilkinsonii
P. ahartii, P. americana, P. argyrocoma, P. baldwinii, P. canadensis, P. chartacea, P. congesta, P. depressa, P. drummondii, P. echinulata, P. erecta, P. fastigiata, P. franciscana, P. herniarioides, P. jamesii, P. lindheimeri, P. maccartii, P. monticola, P. patula, P. pulvinata, P. rugelii, P. sessiliflora, P. setacea, P. virginica, P. wilkinsonii
Synonyms P. pulvinata var. longiaristata
Name authority A. Gray: Proc. Acad. Nat. Sci. Philadelphia 15: 58. (1864) M. C. Johnston: Wrightia 2: 250. (1963)
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