Utbredning
Känd från tre närbelägna lokaler i
Söndrum, Halland, samt en lokal några km längre V
ut (Flaggberget, Tylösand) [Ryde:11].
Karta i Ryde:09. R. eluxatus
finns inte i trakten (den slutar i Harplinge (Särdal) och
finns sedan bara på en enda ruderatlokal i Halmstad, samt
på Sk, Kullaberg.
Holotype (LD, isotypes: GB, S, UPS): Halland, Söndrum: Tylösand, Flaggberget, in a shallow cleft in cliff terrain close to the sea, Swedish Grid RT90 6283501 1311305, leg. U. Ryde, 4 Jul 2009 [Ryde:11].
Bilder från Hl, Söndrum, vid
Bäckagårds sjukhem, 6285791 1314539 och Hl,
Söndrum: Flaggberget Tylösand, i amfybolitgång,
6283501 1311305.
Systematik
Ganska lik och kanske besläktad med R. eluxatus.
Den ger intryck av att vara hybriden mellan R. caesius
och R. eluxatus, men kromosomtalet, 2n = 28, motsäger detta.
Kromosomtal 2n = 28 [Ryde:11].
Description of the type [Ryde:11]: The stem is procumbent, angled, 5-6 mm in diameter, with occasional hairs and few glands. The internodes are 7-9 cm. The prickles are bent at the tip, ~8-13 per 5 cm, 4-5 mm, with a base of 3-4 mm. The stipules are wide, 3-12 mm. The leaves are 17-22 cm long, normally with only 3 leaflets, often yellowish green and rather thin. The leaf stalk is 6-8 cm, with 8-19 falcate prickles, 1-2 mm. The terminal leaflet is narrowly ovate with a weakly cordate base, 9-12 x 6-10 cm, widest around the middle, sparsely hairy above and with hairs only on nerves below, and with a green colour below; its petiolule is 2-3 cm, with 3-6 prickles. The serration is periodical and the leaf apex is mucronate. The lateral leaflets are 9-11 cm with a petiolule of 2-4 mm. The inflorescence is rather short and the rachis is densely hairy with quite numerous stalked glands. The prickles in the inflorescence are ~2 mm and bent. The pedicels are ~1 cm with ~3 prickles of ~0.6 mm that are falcate. The upper leaves are integer or three-lobed and grey-green beneath. The flowers are rather small (~2 cm). The petals are mostly white, but palely pink in the buds. The filaments and styles are white. The sepals are grey-green with a white margin and numerous short-stalked glands, but without prickles; they often have elongated tips and are patent in the fruit. The stamens exceed the styles and the anthers are glabrous. The fruits are usually aborted.
Bilderna i detta dokoment är
thumbnails och länkar till 8x större bilder.