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Drummond's nailwort

Rio Grande nailwort

Habit Plants annual or biennial; taproot filiform to slender. Plants perennial; caudex woody, branched.
Stems

sprawling t2o erect, nearly simple to much-branched especially distally, 7–35 cm, retrorsely pubescent on 1 side or throughout.

erect, 6–10 cm, evenly puberulent with spreading hairs.

Leaves

stipules lanceolate to ovate, 5–10 mm, apex acuminate, entire;

blade linear-oblong to oblanceolate, 5–30 × 1–7 mm, leathery, apex acute to cuspidate, moderately antrorsely pubescent.

stipules lanceolate, 4–7 mm, apex acuminate, entire;

blade linear or needlelike, 4–7 × ca. 0.5 mm, leathery, apex spinulose, puberulous.

Flowers

5-merous, ± short-campanulate, with prominently enlarged hypanthium and calyx flaring distally, (1.5–)2–2.3 mm, pubescent proximally with short, hooked hairs;

sepals greenish to brownish or red-brown, white distally, veins absent, oblong to obovate, 1–1.5 mm, leathery to rigid, margins white, 0.2–0.3 mm wide, papery, apex terminating in divergent awn, hood broadly rounded, awn white, stout-conic, 0.5–0.6 mm, glabrous;

staminodes filiform, ± 0.3 mm;

style 1, cleft in distal 1/5, 0.3–0.6 mm.

5-merous, extended-urecolate, with prominent hypanthial bulge and calyx tapering somewhat distally, 2.8–3.1 mm, moderately pubescent with straight, spreading to appressed hairs generally throughout;

sepals green to red-brown, veins absent or midrib and lateral pair of veins evident in fruit, lanceolate to oblong, 1.3–1.5 mm, leathery to rigid, margins translucent, less than 0.05 mm wide, scarious, apex terminated by awn, hood prominent, narrowly rounded, awn widely divergent, 0.5–0.7 mm, broadly conic in proximal 1/2–2/3 with yellowish, ± glabrous spine;

staminodes subulate, ca. 0.5 mm;

style 1, 2-lobed in distal 1/3–3/5, 0.5–0.7 mm.

Cymes

terminal, 25+-flowered, much-branched but congested, clusters 5–20 mm wide.

terminal, 7–28+-flowered, branched, mostly congested in clusters 5–15 mm wide.

Utricles

ellipsoid to subglobose, 0.5–0.8 mm, minutely papillate distally.

± ovoid, 0.8–0.9 mm, ± smooth, glabrous.

Paronychia drummondii

Paronychia congesta

Phenology Flowering spring–fall. Flowering spring–summer.
Habitat Sandy woodlands, clearings, roadsides Thorn scrubland openings
Elevation 0-100 m (0-300 ft) 200-300 m (700-1000 ft)
Distribution
from FNA
LA; OK; TX
[WildflowerSearch map]
[BONAP county map]
from FNA
TX
[BONAP county map]
Discussion

Chaudhri described two subspecies of Paronychia drummondii based on differences in leaf pubescence, flower size, and style length. We follow B. L. Turner (1983b), who noted that many specimens demonstrate intermediate characteristics, suggesting that taxonomic recognition not be given to the extremes.

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

Of conservation concern.

Paronychia congesta is known only from two collections in Jim Hogg County.

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

Source FNA vol. 5, p. 36. FNA vol. 5, p. 36.
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. echinulata, P. erecta, P. fastigiata, P. franciscana, P. herniarioides, P. jamesii, P. jonesii, P. lindheimeri, P. maccartii, P. monticola, P. patula, P. pulvinata, P. rugelii, P. sessiliflora, P. setacea, P. virginica, P. wilkinsonii
P. ahartii, P. americana, P. argyrocoma, P. baldwinii, P. canadensis, P. chartacea, 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. pulvinata, P. rugelii, P. sessiliflora, P. setacea, P. virginica, P. wilkinsonii
Synonyms P. drummondii subsp. parviflora
Name authority Torrey & A. Gray: Fl. N. Amer. 1: 170. (1838) Correll: Brittonia 18: 307. (1967)
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