The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

King's sandwort

Hooker's sandwort

Habit Plants tufted or sometimes in compact cushion, green, not glaucous, woody or not at base. Plants densely or loosely matted, green, not glaucous, somewhat woody at base.
Stems

erect, (1–)3–20(–25) cm, stipitate-glandular or glabrous proximally.

erect, 1–15(–20) cm, scabrid-puberulent.

Leaves

basal leaves abundant, persistent;

cauline leaves in (1–)4+ pairs, reduced distally or not;

basal blades erect or closely ascending to somewhat spreading, green to gray-green, filiform to needlelike or narrowly subulate, 0.3–3(–4) cm × 0.3–1.2 mm, flexuous or rigid, herbaceous, apex apiculate or stiff and spinose, glabrous to stipitate-glandular, not glaucous.

basal leaves persistent;

cauline leaves in 1–4 pairs, usually little overlapping, often larger than basal leaves;

basal blades straight to arcuate-spreading, subulate to needlelike, 0.3–4 cm × 0.5–1.5 mm, flexible or rigid, herbaceous, apex spinose, glabrous, often glaucous.

Inflorescences

(1–)3–13-flowered, ± open cymes.

3–30+-flowered, congested, capitate or subcapitate cymes.

Pedicels

2–15 mm, glabrous to densely stipitate-glandular.

0.2–2 mm, scabrid-puberulent.

Flowers

sepals 1–3-veined, lateral veins less developed, ovate or lanceolate, (2.5–)2.8–5(–6) mm, not expanding in fruit, margins broad, apex obtuse to broadly acute or acuminate, glabrous or stipitate-glandular on herbaceous portion;

petals white or rarely pink, oblong to spatulate, (3–)4–7 mm, ca. 1.2–1.3 times as long as sepals, apex entire, erose, or 2-fid almost to base;

nectaries as abaxial, rounded lobe with transverse groove or elongate cup at base of filaments opposite sepals, 0.6 × 0.3 mm.

sepals 1–3-veined, often obscurely so, linear-lanceolate to lanceolate, (5–)6–10 mm, not enlarging in fruit, margins narrow, apex narrowly acute or acuminate, glabrous or pubescent;

petals white, oblanceolate, 4.5–8.5 mm, ± equaling sepals, apex rounded to obtuse;

nectaries as lateral and abaxial mounds with transverse groove at base of filaments opposite sepals, 0.2–0.3 mm.

Capsules

4.5–7 mm, glabrous.

to 4 mm, glabrous.

Seeds

black to brown, spheric or oblong to ovoid, 1.2–2.1 mm, low-tuberculate, sometimes papillate on abaxial ridge.

black, ellipsoid-oblong to pyriform with hilar notch, 1.8–2 mm, tuberculate;

tubercles rounded, elongate.

Eremogone kingii

Eremogone hookeri

Distribution
from FNA
CA; ID; NV; OR; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
CO; KS; MT; NE; NM; NV; OK; SD; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

M. F. Baad (1969) considered Eremogone kingii to be monophyletic despite considerable morphological variation; J. C. Hickman (1971) thought otherwise, considering E. kingii to be a “genetic dumping ground for all the closely related taxa,” but did not propose any new taxonomic alignment.

Eremogone kingii is extremely variable throughout its range with six infraspecific taxa recognized (under Arenaria kingii) by B. Maguire (1947, 1951). We have been unsuccessful in distinguishing more than two of those taxa. The others intergrade to such an extent that formal recognition is unwarranted. Most distinctive of these here-rejected taxa is var. uintahensis, said to have sepals (4.5–)5–6 mm, versus 3.6–4.5(–5) for the other taxa. Interestingly, the type specimen has sepals mostly 4.5 mm long. In the main portion of the range of var. uintahensis, the sepals are rounded to broadly obtuse, but they may also be acute. Furthermore, the sepals and pedicels are often glabrous, but the correlation of the above-mentioned characters varies over the range.

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

Varieties 2 (2 in the flora).

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

Parent taxa Caryophyllaceae > subfam. Alsinoideae > Eremogone Caryophyllaceae > subfam. Alsinoideae > Eremogone
Sibling taxa
E. aberrans, E. aculeata, E. capillaris, E. congesta, E. eastwoodiae, E. fendleri, E. ferrisiae, E. franklinii, E. hookeri, E. macradenia, E. pumicola, E. stenomeres, E. ursina
E. aberrans, E. aculeata, E. capillaris, E. congesta, E. eastwoodiae, E. fendleri, E. ferrisiae, E. franklinii, E. kingii, E. macradenia, E. pumicola, E. stenomeres, E. ursina
Subordinate taxa
E. kingii var. glabrescens, E. kingii var. kingii
E. hookeri var. hookeri, E. hookeri var. pinetorum
Key
1. Petals white, apex 2-fid
var. kingii
1. Petals white or rarely pink, apex entire or erose
var. glabrescens
1. Basal leaf blades 0.3-1.5 cm, straight or recurved, rigid; sepals 5-8(-9) mm
var. hookeri
1. Basal leaf blades 2-4 cm, straight, rigid or flexible; sepals (7-)8-10 mm
var. pinetorum
Synonyms Stellaria kingii, Arenaria kingii Arenaria hookeri
Name authority (S. Watson) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 140. (1973) (Nuttall) W. A. Weber: Brittonia 33: 326. (1981)
Source FNA vol. 5, p. 67. Treatment authors: Ronald L. Hartman, Richard K. Rabeler, Frederick H. Utech. FNA vol. 5, p. 66. Treatment authors: Ronald L. Hartman, Richard K. Rabeler, Frederick H. Utech.
Web links