TETRAGONA ssp. ROBUSTA (Tölken) Tölken, 1975
Synonyms :
Crassula robusta Tölken (1972) / Creusa tetragona ssp. robusta (Tölken) P.V.Heath (1993)
Distribution : SA : Growing on dry slopes in sheltered valleys among shrub vegetation; in eastern Cape Province, mainly along Fish River, Sundays River and Groot River valleys.
Description by Tölken, 1985 :
Plants erect and often fastigiate, 30 – 50 (- 100) cm high, usually moderately branched, with carnose main branches 5 – 15 (- 20) mm in diameter at base, with flaking bark.
Leaves (15 -) 20 – 30 (- 40) mm long, 3 – 5 (- 6) mm broad, with blunt apices, curved upwards, rarely spreading,
with old leaves deciduous; sheath 0.5 – 1 mm long.
Inflorescence a round-topped thyrse with many dichasia, with indistinct peduncle having (0 -) 1 pair of bracts without flowers.
Corolla 1.5 – 2.5 mm long, dorsally ridged along lobes.
Flowering period (December) January – March.
Cytology : 2n = 48
Note :
Ssp. robusta – as the name implies – is a very robust plant and has been introduced in Europe already in the early 18th century.