The North American Species of [15]
those of any other Mamillaria known to him.
42. Cactus recurvatus (Engelm.) Kuntze Rev. Gen. Pl. 259 (1891).
Mamillaria recurvispina Engelm. Syn. Cact. 265 (1856), not Vries. Mamillaria recurvata Engelm. Trans. St. Louis Acad. ii. 202 (1863).
Globose or depressed-globose, 7.5 to 20 cm. in diameter, simple: tubercles ovate, deeply grooved, crowded, somewhat imbricate, 10 to 12 mm. long: radial spines 12 to 20, bulbous at base, compressed, rigid, recurved or flexuous, 8 to 18 mm. long, whitish or horny, interwoven with adjacent clusters; central spine solitary (sometimes an additional upper one), stouter and longer (12 to 20 mm.), dark, mostly strongly recurved and appressed (rarely straightish): flowers about 3.5 cm. long, yellow (brownish-tinged outside): fruit unknown. Type, Schott specimens in Herb. Mo. Bot. Gard.
From Sonora to southern Mexico. Fl. June-August.
Specimens examined: Sonora (Schott of 1855).
43. Cactus salm-dyckianus (Scheer) Kuntze. Rev. Gen. Pl. 261 (1891).
Mamillaria salm-dyckiana Scheer in Salm, Cact. Hort. Dyck. 134 (1850).
Subglobose: tubercles very broad and retuse, almost 2-parted by the tomentose groove, with axillary floccose wool: radial spines 7 or 8, very rigid, widely radiant, somewhat curved, 3 to 3.5 cm. long, in older tubercles 3 to 6 additional slender and straight or twisted spines; the solitary central spine very stout, erect, almost 5 cm. long: flowers and fruit unknown. Type: Scheer says that this plant, brought from Chihuahua by Potts, "unfortunately perished," and the description was drawn from fragments, which in those days were not apt to be preserved.
Chihuahua.
Specimens examined: Chihuahua ("Salm of 1857 ").
The specimen referred to is in Herb. Mo. Bot. Gard., and reveals no additional characters; nor can the label be interpreted, except that it indicates that the specimen is from plants cultivated successfully in the gardens of Prince Salm-Dyck.
++ Flower and fruit remaining central in the very woolly vertex of the plant. ++ Central spine solitary or wanting.
44. Cactus compactus (Engelm.) Kuntze Rev. Gen. Pl. 260 (1891).
Mamillaria compacta Engelm. Wisliz. Rep. 21 (1848).
Depressed-globose, 5 to 10 cm. in diameter, simple: tubercles short-conical, crowded, 8 mm. long: radial spines 13 to 16, rigid, recurved and appressed, interwoven with adjacent clusters, whitish or horny, 10 to 20 mm. long; the erect central spine often wanting: flowers 3 to 3.5 cm. long and broad, yellow (brownish without): fruit oval, green: seeds 1.4 mm. long, smooth and yellow. (Ill. Cact. Mex. Bound. t. 74. fig. 2, seeds) Type, Wislizenus of 1846 in Herb. Mo. Bot. Gard.
Mountains of Chihuahua. Fl. June-July.
Specimens examined: Chihuahua (Wislizenus of 1846): also specimens cultivated in St. Louis in 1848, 1850, 1854.
45. Cactus radians. (DC.) Kuntze, Rev. Gen. Pl. 261 (1891).
Mamillaria radians DC. Rev. Cact. 111 (1829). Mamillaria pectinata Engelm Syn. Cact. 266 (1856).
Globose, 3.5 to 7.5 cm. in diameter, simple: tubercles conical, from a 4-angled base, lower ones short (4 to 6 mm.), upper flower-bearing ones longer (10 to 12 mm.), terete and grooved: radial spines 16 to 24, somewhat recurved from a bulbous compressed base, stiff and pectinate, horny or whitish (at length ashy), interwoven with adjacent clusters, those on lower tubercles about equal (6 to 10 mm.), on flower-bearing tubercles elongated, mixed with a few stouter ones and fasciculated (lower ones 10 to 12 mm. long, upper ones 12 to 18 mm. long and forming an apical tuft); centrals none: flowers over 5 cm. long and about 6 to 7.5 cm. in diameter when expanded, bright sulphur-yellow: fruit ovate and green, about 12 mm. long: seeds compressed, brownish smooth and shining, 1.8 mm. long. (Ill. Cact. Mex. Bound. t. 11) Type unknown; that of M. pectinata Engelm. is the Wright material in Herb. Mo. Bot. Gard.
Extending from the hills along the Lower Pecos to El Paso, southwestern Texas, southward through Coahuila and San Luis Potosi
42. Cactus recurvatus (Engelm.) Kuntze Rev. Gen. Pl. 259 (1891).
Mamillaria recurvispina Engelm. Syn. Cact. 265 (1856), not Vries. Mamillaria recurvata Engelm. Trans. St. Louis Acad. ii. 202 (1863).
Globose or depressed-globose, 7.5 to 20 cm. in diameter, simple: tubercles ovate, deeply grooved, crowded, somewhat imbricate, 10 to 12 mm. long: radial spines 12 to 20, bulbous at base, compressed, rigid, recurved or flexuous, 8 to 18 mm. long, whitish or horny, interwoven with adjacent clusters; central spine solitary (sometimes an additional upper one), stouter and longer (12 to 20 mm.), dark, mostly strongly recurved and appressed (rarely straightish): flowers about 3.5 cm. long, yellow (brownish-tinged outside): fruit unknown. Type, Schott specimens in Herb. Mo. Bot. Gard.
From Sonora to southern Mexico. Fl. June-August.
Specimens examined: Sonora (Schott of 1855).
43. Cactus salm-dyckianus (Scheer) Kuntze. Rev. Gen. Pl. 261 (1891).
Mamillaria salm-dyckiana Scheer in Salm, Cact. Hort. Dyck. 134 (1850).
Subglobose: tubercles very broad and retuse, almost 2-parted by the tomentose groove, with axillary floccose wool: radial spines 7 or 8, very rigid, widely radiant, somewhat curved, 3 to 3.5 cm. long, in older tubercles 3 to 6 additional slender and straight or twisted spines; the solitary central spine very stout, erect, almost 5 cm. long: flowers and fruit unknown. Type: Scheer says that this plant, brought from Chihuahua by Potts, "unfortunately perished," and the description was drawn from fragments, which in those days were not apt to be preserved.
Chihuahua.
Specimens examined: Chihuahua ("Salm of 1857 ").
The specimen referred to is in Herb. Mo. Bot. Gard., and reveals no additional characters; nor can the label be interpreted, except that it indicates that the specimen is from plants cultivated successfully in the gardens of Prince Salm-Dyck.
++ Flower and fruit remaining central in the very woolly vertex of the plant. ++ Central spine solitary or wanting.
44. Cactus compactus (Engelm.) Kuntze Rev. Gen. Pl. 260 (1891).
Mamillaria compacta Engelm. Wisliz. Rep. 21 (1848).
Depressed-globose, 5 to 10 cm. in diameter, simple: tubercles short-conical, crowded, 8 mm. long: radial spines 13 to 16, rigid, recurved and appressed, interwoven with adjacent clusters, whitish or horny, 10 to 20 mm. long; the erect central spine often wanting: flowers 3 to 3.5 cm. long and broad, yellow (brownish without): fruit oval, green: seeds 1.4 mm. long, smooth and yellow. (Ill. Cact. Mex. Bound. t. 74. fig. 2, seeds) Type, Wislizenus of 1846 in Herb. Mo. Bot. Gard.
Mountains of Chihuahua. Fl. June-July.
Specimens examined: Chihuahua (Wislizenus of 1846): also specimens cultivated in St. Louis in 1848, 1850, 1854.
45. Cactus radians. (DC.) Kuntze, Rev. Gen. Pl. 261 (1891).
Mamillaria radians DC. Rev. Cact. 111 (1829). Mamillaria pectinata Engelm Syn. Cact. 266 (1856).
Globose, 3.5 to 7.5 cm. in diameter, simple: tubercles conical, from a 4-angled base, lower ones short (4 to 6 mm.), upper flower-bearing ones longer (10 to 12 mm.), terete and grooved: radial spines 16 to 24, somewhat recurved from a bulbous compressed base, stiff and pectinate, horny or whitish (at length ashy), interwoven with adjacent clusters, those on lower tubercles about equal (6 to 10 mm.), on flower-bearing tubercles elongated, mixed with a few stouter ones and fasciculated (lower ones 10 to 12 mm. long, upper ones 12 to 18 mm. long and forming an apical tuft); centrals none: flowers over 5 cm. long and about 6 to 7.5 cm. in diameter when expanded, bright sulphur-yellow: fruit ovate and green, about 12 mm. long: seeds compressed, brownish smooth and shining, 1.8 mm. long. (Ill. Cact. Mex. Bound. t. 11) Type unknown; that of M. pectinata Engelm. is the Wright material in Herb. Mo. Bot. Gard.
Extending from the hills along the Lower Pecos to El Paso, southwestern Texas, southward through Coahuila and San Luis Potosi