—+ own from Cadiz, constitute for the time being the only authentic

C. BENEDf & J.J. ORELL
27
Table 2—Distinguishing traits between C. humifusa, C. serpens, C. vulgaris subsp. vulgaris and C. vulgaris subsp.
massiliensis.
C. humifusa
C. serpens
C. vulgaris
subsp. vulgaris
oblong to
oblanceolate
ovate to
suborbicular
ovate to obovate
ovate-oblong to
oblong
Leaves (shape)
serrate
entire
entire-crenulate
serrate
Leaves (length)
4-6 mm
3-6 mm
2-9 mm
4-8 mm
obtuse to
rounded
retuse
obtuse-retuse
obtuse-retuse
entire
truncate to
(tri) lobulate
entire to
(tri) lobulate,
less than
double the gland
entire to
(tri) lobulate,
more than
double the
gland
laciniate
deltate
(rarely
fimbriate)
fimbriate
fimbriate
Seeds (shape)
ovoid
tetrahedral
ovoid to
subtetrahedral
ovoid to
subtetrahedral
Seeds (testa)
smooth
smooth
rugose-granulate
rugosegranulate
Indumentum
Leaves (shape)
Leaves (apex)
Appendage
Stipules
—+
C. vulgaris
subsp.
massiliensis
own from Cadiz, constitute for the time being the only authentic evidence for the presence of
this neophyte in the Peninsula for at least a century, the last being based on Perez-Lara's
hundred-year-old collection.
Material studied
Austria
In cultis et viis horti botanici Vindobonensis (BC 57576).
Belgium
Bélgica: Jardin botânico (MAF 95625).
France
GIRONDE: Bordeaux, Jard. Bot., 15-XI-1913, Bouchon (BC 57569).
Spain
CADIZ: Jerez, in cultis, 9-VIII-1882, Perez Lara (MAF 23503, MAF 23504). GIRONA:
Girona, en la Devesa, ruderal, DG84, 22-VII-1981, T. Casasayas (BCC).
2. Chamaesyce humistrata (Engelm. ex Gray) Small, Fl. s.e. U.S.
= Euphorbia humistrata Engelm. ex Gray, Man., ed. 2 :386 (1856).