Drosanthemopsis diversifolia

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Drosanthemopsis diversifolia

Drosanthemopsis diversifolia (L.Bolus) Klak in S. African J. Bot. 116: 77. 2018 sec. Klak & al. 20181
  • Drosanthemum diversifolium L.Bolus, Notes Mesembryanthemum 2: 10. 1928 syn. sec. Klak & al. 20181
  • Knersia diversifolia (L.Bolus) H.E.K.Hartmann & Liede in Bradleya 31. 2013 syn. sec. Klak & al. 20181
    • Type: "South Africa. Western Cape, Vanrhynsdorp (3118DA), without date, Ross Frames sub NBG 205/ 28 (BOL, holo.!)"2
  • 1. Klak, C., Hanáček, P. & Bruyns, P. V. 2018: A recircumscription of Jacobsenia (Aizoaceae): Re-instating Drosanthemopsis, with two new quartz-endemics from Namaqualand, South Africa and sinking Knersia. – S. African J. Bot. 116: 67-81, 2. Klak, C., Hanáček, P. & Bruyns, P. V. 2018: A recircumscription of Jacobsenia (Aizoaceae): Re-instating Drosanthemopsis, with two new quartz-endemics from Namaqualand, South Africa and sinking Knersia. – S. African J. Bot. 116: 67-81
  • =Drosanthemum subalbum L.Bolus, Notes Mesembryanthemum 2: 248. 1931 syn. sec. Klak & al. 20183
    • Type: "South Africa. Western Cape, Vanrhynsdorp (3118DA), Sept. 1930, Luckhoff sub BOL19374 (BOL!, lecto.!, designated by Hartmann and Liede-Schumann, 2013)"4,5
  • 3. Klak, C., Hanáček, P. & Bruyns, P. V. 2018: A recircumscription of Jacobsenia (Aizoaceae): Re-instating Drosanthemopsis, with two new quartz-endemics from Namaqualand, South Africa and sinking Knersia. – S. African J. Bot. 116: 67-81, 4. Hartmann, H. E. K. & Liede-Schumann, S. 2013: Knersia gen. nov., an emigrant from Drosanthemum (Ruschieae, Ruschioideae, Aizoaceae). – Bradleya 31: 116-127, 5. Klak, C., Hanáček, P. & Bruyns, P. V. 2018: A recircumscription of Jacobsenia (Aizoaceae): Re-instating Drosanthemopsis, with two new quartz-endemics from Namaqualand, South Africa and sinking Knersia. – S. African J. Bot. 116: 67-81

Notes

Drosanthemopsis diversifolia is the only species in the genus where the leaves are free at their bases: in the other three species the leaves are fused basally into a sheath.A

Conservation

The species is common and we therefore consider that it is not threatened.A

Description

Erect woody shrublet 7–15 cm high, 20–30 cm diam., young internodes covered with low, ovate papillae, as white dots on reddish-brown bark when dry, turning smooth and black with age, long internodes and very short ones present. Leaves basally free, dirty green, often suffused reddish, ascending, trigonous to cymbiform, 8–19(−25) mm long, 4–8 mm diam.; epidermis with large, ± circular bladder cells with flat top, with many short protrusions, longer protrusions especially along the margin. Flowers 25–35(−40) mm diam., pedicels 10–20 mm long; sepals 6, outer ones roundish and bigger than the inner four lobes; petals white to deep pink; filaments white to deep pink. Fruit 5–7 mm diam., locules 6, expanding keels diverging distally, closing bodies firm, valve wings broad. Seeds with a translucent testa, perisperm white, the area of the embryo purplish-black with white dots, 0.75 × 0.45 mm.A

Citation

Knersia diversifolia (L.Bolus) H.E.K.Hartmann & Liede: Hartmann, H. E. K. 2017 – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: Springer: 715 (as Knersia diversifolia (L.Bolus) H.E.K.Hartmann & Liede)

Bibliography

A. Klak, C., Hanáček, P. & Bruyns, P. V. 2018: A recircumscription of Jacobsenia (Aizoaceae): Re-instating Drosanthemopsis, with two new quartz-endemics from Namaqualand, South Africa and sinking Knersia. – S. African J. Bot. 116: 67-81