Leocereus glaziovii Schumann

Cereus glaziovii Schumann in Martius, Fl. Bras. 42: 200. 1890.

Stems erect, with somewhat spreading branches, 1.5 to 2 cm. in diameter; ribs 12, low; areoles a little longer than broad; spines 20 to 30, subulate, brownish, 1.5 to 2.5 cm. long; flowers 6 cm. long, funnelform; inner perianth-segments white, 2.5 to 3.5 cm. long, 5 mm. broad, acuminate; stamens included; scales of the ovary woolly in their axils; fruit narrowly oblong, 2 cm. long, 5 mm. in diameter; seeds small, black.

Type locality: Near Pico d'Itabira do Campo.

Distribution: Known only from the type locality.

Cereus glaziovii Schumann was placed by K. Schumann next to C. melanurus Schumann, and is probably congeneric with it; its flowers are similar, but the ovary and fruit are not spiny. It is known only from the collection made by Glaziou in the State of Minas Geraes, Brazil, near Pico d'Itabira do Campo.

Fig. 160.—Leocereus bahiensis.


Rootstock 1 to 2 dm. broad, flattened, shallow-seated; stems several, erect or ascending un-branched, up to 1 meter long or more, 3 to 4 cm. in diameter; ribs 13 to 15, low, 3 to 4 mm. high; areoles close together, 3 to 4 mm. apart, brown-felted when young; spines yellowish, 20 or more acicular, about 1 cm. long; flowers said to be tubular, 2.5 to 3 cm. long, somewhat hairy; perianth-segments white.

Collected by Campos Porto, on the Serra do Ouro Branco, Minas Geraes, Brazil, December 1916.

This plant was collected for Cereus melanurus, but it is too tall and stout and has different spines and smaller flowers. We have living specimens of this plant collected by Señor Porto, but they have not yet flowered in cultivation.

16. WILCOXIA Britton and Rose, Contr. U. S. Nat. Herb. 12 434. 1909.

Plants usually low and weak, producing a cluster of dahlia-like roots; stems very slender, more or less branched, the branches often only the diameter of a lead pencil; ribs few and low; spines of all the areoles similar; flowers diurnal, funnelform-campanulate, red or purple, large for the size of the plant, only 1 from an areole, the tube rather short, its areoles bearing spines or bristles and wool; areoles of the ovary and fruit bearing spines or bristles and wool; seeds black; aril large, basal.

Type species: Echinocereus poselgeri Lemaire.

Four species, of Texas and Mexico, compose the genus as known.

The type species has been included in Echinocereus, but its habit is very unlike that genus, while the second and third species have been considered as belonging to Cereus proper.

The genus was named for General Timothy E. Wilcox, U. S. A., who for many years has been an enthusiastic student of plants.

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