Monanthes brachycaulon (Webb &
Berth.) Lowe
Endemic from the islands Tenerife
and Gran Canaria.
This plant has a very small single
rosette, mostly with a thickened rootstock, bulb-like or cylindrical. It is
distinguished at all periods of growth by his much broader leaves which are
much fewer in number (about 20 to a rosette instead of two to four times as
many by other species.
Leaves loosely rosulated,
oblanceolate-spathulate, bluntly pointed at apex, attenuate and subpetiolate at
base, glabrous, papillose, very fleshy, flat or concave on face, very convex on
back, 1,5 to 2cm long, 5mm broad, 2,5mm thick, green mottled with purple, with
a purple midrib and purple stain at base. Flowering branches lateral, from the
axils of the lower leaves, 4 to 10 cm long. Raceme 5- to 7- (10) flowered.
Flowering as from half March until
mid June .
Habitat: locally abundant on
Tenerife and Gran Canaria in crevices of rocks and walls. From sea level up to
+/- 2100 meter.
His synonyms : Petrophyes
brachycaulon - Sempervivum bulbosum - Sempervivum
brachycaulon - Sempervivum Louwei Pavia - Petrophyes brachycladon .
Hybrids exist : M. brachycaulon X polyphylla ; M. brachycaulon X pallens
and M. brachycaulon X laxiflora.
Formas have been described but
never seen by me : M. brachycaulon fa
ramosa and M. brachycaulon fa fasciata
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