J. McNeill, Taxonomic studies in the Alsinoideae II. A revision of the species in the Orient in Notes Roy. Bot. Gard. Edinburgh 24. 1963R. D. Meikle, Flora of Cyprus 1. 1977
but supplemented and modified
1Leaves setaceous in dense fascicles; petals conspicuous, often stained red externally
1'Leaves not setaceous nor in dense fascicles; petals always white, often minute
2Sepals indurated, generally erect and connivent at anthesis; pedicels very short, much shorter than calyx
2'Sepals not indurated, generally spreading at anthesis; pedicels longer than calyx (except in M. mediterranea)
3At least some pedicels longer than 2 mm; nerves of sepals and leaves plane without disc-like swellings (lens needed)
3'Pedicels shorter than 2 mm; nerves of sepals and leaves with disc-like swellings (lens needed)
4Calyx truncate at base; sepals ovate-lanceolate; capsule 3-4 mm long
4'Calyx rounded at base, sometimes truncate; sepals linear-lanceolate; capsule c. 2.5 mm long
5Calyx rounded at the base; stem short (2-6 cm); capsule with more than 6 seeds
5'Calyx truncate at the base; stem frequently elongated (4-25 cm); capsule with 2-5 seeds
6Petals as long as sepals or a little longer; leaves often rather ?eshy; normally a seashore plant
6'Petals shorter than sepals; leaves not ?eshy; plants not normally restricted to seashores
7Sepals broadly ovate or oblong-ovate, obscurely nerved, c. 2 mm long; pedicels conspicuously elongate and slender
7'Sepals linear-lanceolate, distinctly 3-nerved, 3.5-5 mm long; pedicels not conspicuously elongate and slender
8Inflorescence lax, cymose; pedicels generally longer than calyx; capsule c. 5 mm long
8'Inflorescence congested, fasciculate; pedicels of the upper flowers usually shorter than calyx; capsule 2.5-3 mm long