. The Cactaceae : descriptions and illustrations of plants of the cactus family. 8 THE CACTACEAE. 4. Echinocereus huitcholensis (Weber) Gurke, Monatsschr. Kakteenk. 16: 23. 1906. Cereus huitcholensis Weber, Bull. Mus. Hist. Nat. Paris 10: 383. 1904. Plants 4 to 6 cm. long, 2 to 4 cm. in diameter; radial spines 10 to 12; central spine usually soli- tary ; flowers 11 cm. long or less, narrow, with a pronounced tube; color of perianth-segments un- certain but perhaps orange, as in E. salm-dyckianus; spines on ovary and tube weak, acicular; areoles of flower-tube bearing long cobwebby hairs. Type
. The Cactaceae : descriptions and illustrations of plants of the cactus family. 8 THE CACTACEAE. 4. Echinocereus huitcholensis (Weber) Gurke, Monatsschr. Kakteenk. 16: 23. 1906. Cereus huitcholensis Weber, Bull. Mus. Hist. Nat. Paris 10: 383. 1904. Plants 4 to 6 cm. long, 2 to 4 cm. in diameter; radial spines 10 to 12; central spine usually soli- tary ; flowers 11 cm. long or less, narrow, with a pronounced tube; color of perianth-segments un- certain but perhaps orange, as in E. salm-dyckianus; spines on ovary and tube weak, acicular; areoles of flower-tube bearing long cobwebby hairs. Type locality: Sierra de Xayarit, Jalisco, Mexico. Distribution: Known only from the type locality. Weber described it as a Cereus, but without seeing flowers or fruit, basing it on the collection of L. Diguet of 1900. Three sheets of this collection are in the herbarium of the Museum of Paris, and with them are a flower, immature fruit, and two plants of another species, perhaps undescribed. 5. Echinocereus pensilis (K. Brandegee) J. A. Purpus, Monatsschr. Kakteenk. 18: 5. 1908. Cereus pensilis K. Brandegee, Zoe 5: 192. 1904. More or less cespitose; the stems often erect, 30 cm. high or, when growing on cliffs, hanging, and then nearly 2 meters long, 3 to 4 cm. in diameter; ribs 8 to 10, low; areoles about 10 mm. apart; spines needle-like, at first yellow, becoming reddish gray, the longest not over 2 cm. long; radial spines about S; central spine 1; flowers orange-red, narrow, 5 to 6 cm. long; areoles on ovary and tube bearing short, yellow or white wool and chestnut-colored bristly spines; fruit globular, to 2 cm. in diameter; seeds black, rugose, very oblique at base. Type locality: Sierra de la Laguna, Lower California. Distribution: High mountains of the Cape region of Lower California. This species is unlike most of the known Lower Californian species in that it grows in the high mountains of the Cape region and is in fact more closely related to the species of the mounta
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