FNA: Drymaria molluginea vs. Drymaria viscosa

	Drymaria molluginea	Drymaria viscosa
	slim-leaf drymary	sticky drymary
Habit	Plants annual, herbaceous, glabrous or sparsely glandular, not glaucous.	Plants annual, herbaceous, viscid, not glaucous.
Stems	erect, simple or dichotomously branched, 3–25(–30) cm.	prostrate, diffusely branched proximally, 5–20 cm.
Leaves	mostly appearing whorled; stipules ± persistent, simple, filiform to subulate, 0.5–2 mm; petiole absent or nearly so; blade linear, 1–3(–3.5) cm × 0.5–1.5(–2) mm, base attenuate, apex rounded, sometimes apiculate.	appearing whorled or opposite; stipules deciduous, simple, filiform, 1–1.5 mm; petiole absent or nearly so; blade linear to narrowly lanceolate, 0.3–1.5 cm × 0.5–1.5 mm, base attenuate, apex rounded to acute.
Inflorescences	terminal or racemose, open, 3–30+-flowered cymes.	axillary and terminal, somewhat congested, 4–7-flowered cymes.
Pedicels	shorter to longer than subtending bracts at maturity.	shorter to longer than subtending bracts at maturity.
Flowers	sepals with midvein prominent, lateral pair often evident, then arcing outward at midsection and confluent apically, broadly ovate to ± orbiculate (herbaceous portion elliptic to oblong or lanceolate), 2–3.5 mm, subequal, apex obtuse (herbaceous portion similar), hood oblique or at right angles to apex, formed in part by scarious margins, glabrous; petals 4-fid for 1/2 or less their length, 1.7–2.5 mm, subequal to sepals, lobes 1-veined, vein unbranched, linear, outer pair 1/3–1/2 as long as petal trunk, inner pair slightly shorter or, sometimes, greatly reduced or absent, trunk laterally denticulate, base abruptly tapered, apex rounded.	sepals with 3 obscure veins arcing outward at midsection and ± confluent apically, lanceolate to narrowly ovate (herbaceous portion similar), 2.3–3 mm, subequal, apex obtuse (herbaceous portion acute to acuminate), not hooded, stipitate-glandular; petals 2-fid for 1/2+ their length, 1.8–2.2 mm, 2/3–1 times sepals, lobes 1-veined, vein unbranched, spatulate, trunk absent, base gradually tapered, apex rounded.
Seeds	dark brown to purplish, horseshoe-shaped, 0.8–0.9 mm; tubercles minute, rounded.	brown abaxially, transparent (or white embryo visible) adaxially, snail-shell- or teardrop-shaped, 0.6–0.7 mm; tubercles minute, rounded.

	Drymaria molluginea	Drymaria viscosa
Phenology	Flowering late summer–early fall.	Flowering spring.
Habitat	Rocky to sandy soil	Stabilized sand dunes
Elevation	2100-2400 m (6900-7900 ft)	200-300 m (700-1000 ft)
Distribution	AZ; NM; TX; Mexico [WildflowerSearch map] [BONAP county map]	AZ; Mexico (Baja California, Sonora) [BONAP county map]
Discussion		Drymaria viscosa is often attributed to S. Watson ex Orcutt; however, as B. D. Parfitt and W. C. Hodgson (1985) correctly stated, C. R. Orcutt (1886) merely mentioned the name and did not publish it validly. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 5, p. 13.	FNA vol. 5, p. 14.
Parent taxa	Caryophyllaceae > subfam. Polycarpoideae > Drymaria	Caryophyllaceae > subfam. Polycarpoideae > Drymaria
Sibling taxa	D. cordata, D. depressa, D. effusa, D. glandulosa, D. laxiflora, D. leptophylla, D. pachyphylla, D. viscosa	D. cordata, D. depressa, D. effusa, D. glandulosa, D. laxiflora, D. leptophylla, D. molluginea, D. pachyphylla
Synonyms	Arenaria molluginea, Alsine molluginea, D. sperguloides
Name authority	(Seringe) Didrichsen: Linnaea 29: 738. 1858	S. Watson: Proc. Amer. Acad. Arts 22: 469. (1887)
Web links	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Drymaria viscosa

slim-leaf drymary

sticky drymary

Habit

Plants annual, herbaceous, glabrous or sparsely glandular, not glaucous.

Plants annual, herbaceous, viscid, not glaucous.

Stems

erect, simple or dichotomously branched, 3–25(–30) cm.

prostrate, diffusely branched proximally, 5–20 cm.

Leaves

mostly appearing whorled;

stipules ± persistent, simple, filiform to subulate, 0.5–2 mm;

petiole absent or nearly so;

blade linear, 1–3(–3.5) cm × 0.5–1.5(–2) mm, base attenuate, apex rounded, sometimes apiculate.

appearing whorled or opposite;

stipules deciduous, simple, filiform, 1–1.5 mm;

petiole absent or nearly so;

blade linear to narrowly lanceolate, 0.3–1.5 cm × 0.5–1.5 mm, base attenuate, apex rounded to acute.

Inflorescences

terminal or racemose, open, 3–30+-flowered cymes.

axillary and terminal, somewhat congested, 4–7-flowered cymes.

Pedicels

shorter to longer than subtending bracts at maturity.

Flowers

sepals with midvein prominent, lateral pair often evident, then arcing outward at midsection and confluent apically, broadly ovate to ± orbiculate (herbaceous portion elliptic to oblong or lanceolate), 2–3.5 mm, subequal, apex obtuse (herbaceous portion similar), hood oblique or at right angles to apex, formed in part by scarious margins, glabrous;

petals 4-fid for 1/2 or less their length, 1.7–2.5 mm, subequal to sepals, lobes 1-veined, vein unbranched, linear, outer pair 1/3–1/2 as long as petal trunk, inner pair slightly shorter or, sometimes, greatly reduced or absent, trunk laterally denticulate, base abruptly tapered, apex rounded.

sepals with 3 obscure veins arcing outward at midsection and ± confluent apically, lanceolate to narrowly ovate (herbaceous portion similar), 2.3–3 mm, subequal, apex obtuse (herbaceous portion acute to acuminate), not hooded, stipitate-glandular;

petals 2-fid for 1/2+ their length, 1.8–2.2 mm, 2/3–1 times sepals, lobes 1-veined, vein unbranched, spatulate, trunk absent, base gradually tapered, apex rounded.

Seeds

dark brown to purplish, horseshoe-shaped, 0.8–0.9 mm;

tubercles minute, rounded.

brown abaxially, transparent (or white embryo visible) adaxially, snail-shell- or teardrop-shaped, 0.6–0.7 mm;

tubercles minute, rounded.

Drymaria molluginea

Drymaria viscosa

Phenology

Flowering late summer–early fall.

Flowering spring.

Habitat

Rocky to sandy soil

Stabilized sand dunes

Elevation

2100-2400 m (6900-7900 ft)

200-300 m (700-1000 ft)

Distribution

AZ; NM; TX; Mexico

[WildflowerSearch map]

[BONAP county map]

AZ; Mexico (Baja California, Sonora)

[BONAP county map]

Discussion

Drymaria viscosa is often attributed to S. Watson ex Orcutt; however, as B. D. Parfitt and W. C. Hodgson (1985) correctly stated, C. R. Orcutt (1886) merely mentioned the name and did not publish it validly.

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

Source

FNA vol. 5, p. 13.

FNA vol. 5, p. 14.

Parent taxa

Caryophyllaceae > subfam. Polycarpoideae > Drymaria

Sibling taxa

D. cordata, D. depressa, D. effusa, D. glandulosa, D. laxiflora, D. leptophylla, D. pachyphylla, D. viscosa

D. cordata, D. depressa, D. effusa, D. glandulosa, D. laxiflora, D. leptophylla, D. molluginea, D. pachyphylla

Synonyms

Arenaria molluginea, Alsine molluginea, D. sperguloides

Name authority

(Seringe) Didrichsen: Linnaea 29: 738. 1858

S. Watson: Proc. Amer. Acad. Arts 22: 469. (1887)

Web links

Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).

Choose a data source: Flora of North America

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Flora of North America species comparison

Drymaria molluginea

Drymaria viscosa

Drymaria molluginea

Drymaria viscosa