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370
HENNING HORN AF RANTZIEN
view the two species are also rather different. Phl. exaratum is a
pro-nounced hemerophilous plant of arid soil with an occurrence ahove all
in the wineyards and as a weed of roadsides and arahle fields. It
aecom-panies cnltivation and may have been disseminated with seed over great
parts of its present area of distribution. Phl. arenarium ön the other
hand is a typical psammophyte and is found in its liighest frequency
ön the sand beaehes and dunes along the coast of Western Europé. It
seems to be eonsiderably less favoured bv human agency than the
foregoing species.
3. Phleum crypsoides (Urv.) Hackel,
in Franchet in Bull. Soc. Bot. Fr., XXXIX (1892) p. 274.
1’halaris crypsoides Urville in Mem. Soc. Linn. Par., I (1822) p. 263.
ss]). eu-crypsoides n. nom.
Maillea crypsoides Boissier, Fl. Orient., V (1884) p. 479 pro parte. —
Maillea Vrvillei Parlatore, Pl. Nov. 118421 p. 31. — Phleum crypsoides de Halaczy,
Consp. FI. Graec., III (1904) p. 348; non Phleum crypsoides Arcangeli, FI. Ital.,
ed. 2 (1894) p. 26. — Phleum crypsoideum Rouy in Bull. Soc. Bot. Fr., XXXIX (1892)
p. 209.
ssp. sardoum (Hack.) n. comb.
Phleum sardoum Hackel, Bull. Soc. Bot. Fr., XXXIX (1892) p. 270. — Maillea
Vrvillei v. sardoa Hackel in Barbey, FI. Sard. Comp. (18851 p. 66. — Phleum
crypsoides Arcangeli, FI. Ital., ed. 2 (1894) p. 26. — Phleum arenarium v. sardoum
Fiori et Paoletti, Fl. d’ltal., I (1896) p. 58 Fiori, Nuova Fl. Anal. d’Ital., I
(1923) p. 89.
There has been some discussion about these two forms (cf. Hackel
1885, i>. 66, and 1892, p. 272 ff., Gandoger 1892 a, pp. 21—23, and
1892 b, p. 352, Rouy 1892. p. 269 and Franchet 1892. p. 270) regarding
the taxonomical position. Originally described as a Phalaris by
d Urville, Phl. crypsoides was transferred by Parlatore (1842. p. 31)
to the new genus Maillea. Hackel (1892. p. 272) included il in Ihe genus
Phleum. Phl. crypsoides ssp. eu-crypsoides has a verv limited
distribution in the eastern part of the Mediterranean Area (the Islands of Chios
and Rhodes, the small rocky island of Raphti off the coast ol’ Attica,
in the neighbourhood of Corinth and in Grete).
The ssp. sardoum, endemic in Sardinia — only known from one
Iocality — was first collected by Reverchon in 1881. It was already
recognized by Boissier (1884. p. 479: »Forma glumis carina longius
ciliatis»). Hackel (1885, p. 86) decribed and figured this form under
the na me Maillea Vrvillei v. sardoa. Låter ön, Hackel (1892, p. 274)
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