Cactaceae by Marshall W.T., Bock T.M.

By Marshall W.T., Bock T.M.

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Ovary naked or with few scales which sometimes bear a few hairs in their axils; D. Fruit naked or nearly so; E. Flowering areoles not differing from non flowering ones; perianth funnelform; Columnar cacti; perianth falling from fruit leaving persistent style (Fig. 1) . . . . . . Genus 1. Cereus Slender, bushy cacti; perianth persistent on the Fruit (Fig. Genus 2. Monvillea EE. Flowering areoles differing in armament from non flowering ones; perianth short funnelform to short campanulate; Fruit top shaped; forced out of cephalium when ripe (Fig.

Genus 6. Weberocereus Tube of flower and non‑tuberculate ovary bearing short, black spines (Fig. 6) . . . . . . . . . Genus 7. Werckleocereus Limb of flower somewhat oblique, the tube slender; flowers red ish (Fig. 8). . . . . . . . . Genus 8. Aporocactus AA. joints flat (Fig. 9). . . . . . . . . . . Genus 9. Strophocactus Illustrated in Plate 10 Fig. 4. Mediocactus coccineus flower Fig. 5. Deamia testudo flower Fig. 6. Wercklerocereus Tonduzii flower Fig. 7. Weberocereus Tunilla flower Fig.

Genus 11. Toumeya Fruit fleshy, indehiscent; Plant small, tuberculate (Fig. 12). . . . . . . Genus 12. Epithelantha Plant ribbed, the ribs horizontally furrowed (Fig. 13) . . . Genus 13. Aztekium Illustrated in Plate 13 Fig. 8. Copiapoa coquimbana Fig. 9. Coloradoa mesae-verdae Fig. 10. Pediocactus Simpsonii Fig. 11. Toumeya papyracantha Fig. 12. Epithelantha micromeris Fig. 13. Aztekium Ritteri Tribe III. Cereeae Sub-tribe 4. Echinocactanae—continued Fig. 8 Fig. 9 Fig. 10 Fig.

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