Cephalocereus brooksianus Britton and Rose Torreya 12 14 1912

Cereus brooksianus Vaupel, Monatsschr. Kakteenk. 22: 66. 1912.

Plant 3 to 6 meters high, stout, much branched at base, bluish green, glaucous; ribs 8 or 9, obtuse; areoles closely set, in flowering specimens almost contiguous, bearing silky hairs when young and tufts of long white hairs at flowering ones; spines about 16, acicular, up to 3 cm. long, yellow, all somewhat similar, the upper ones in each areole ascending; flowers 5 to 6 cm. long, opening in the evening, odorless, somewhat flattened; tube stout, rigid, green, with only 2 or 3 small scales; inner perianth-segments about 10, rather rigid, broad, a little spreading; throat of flower wide; stamens very numerous, all included; filaments white, attached all over the long broad throat, 3 cm. long; tube proper very short, 8 mm. long or less; style white, rigid, 5 cm. long; ovary naked.

Type locality: Near Novaliches, about six miles south of Guantanamo, Cuba.

Distribution: Dry, rocky situations, provinces of Oriente and Santa Clara, Cuba.

Plate vin, figure 1, is from a plant collected by Dr. Britton at Guantanamo Bay, Cuba, in 1909, which flowered at the New York Botanical Garden in 1913.

35. Cephalocereus royenii (Linnaeus) Britton and Rose, Contr. U. S. Nat. Herb. 12: 419. 1909.

Cactus royenii Linnaeus, Sp. Pl. 467. 1753.

Cereus royenii Miller, Gard. Diet. ed. 8. No. 7. 1768.

Cereus fulvispinosus Haworth, Syn. Pl. Suee. 183. 1812.

Cactus fulvispinosus Sprengel, Syst. 2: 496. 1825.

Cereus floccosus Otto in Pfeiffer, Enum. Caet. 81. 1837.

Cereus armatus Otto in Pfeiffer, Enum. Caet. 81. 1837.

Pilocereus floccosus Lemaire, Illustr. Hort. 13: under pl. 470. 1866.

Cereus leiocarpus Bello, Anal. Soe. Esp. Hist. Nat. 10: 276. 1881.

Pilocereus barbatus Rebut in Förster, Handb. Caet. ed. 2. 650. 1885.

Pilocereus royenii Rümpler in Förster, Handb. Caet. ed. 2. 682. 1885.

Pilocereus royeni armatus Salm-Dyek in Förster, Handb. Caet. ed. 2. 682. 1885.

Pilocereus strictus fouachianus Sehumann, Gesamtb. Kakteen 190. 1897.

Pilocereus fulvispinosus Sehumann Gesamtb. Kakteen 196. 1897.

Pilocereus fouachianus Weber in Gosselin, Bull. Mus. Hist. Nat. Paris 10: 386. 1904.

Cereus fouachianus Vaupel, Monatssehr. Kakteenk. 23: 25. 1913.

Fig. 73.—Cephaloeereus lanuginosus. Fig. 74.—Cephaloeereus royenii.

Stout, 2 to 8 meters high or more, either branching near the base or with a short definite trunk up to 3 dm. in diameter; branches stout, erect or ascending, glaucous, green to blue; ribs 7 to 11, high; areoles close together; spines acicular, very variable, often only 1 cm. long, but sometimes 6 cm. long, yellow; young areoles bearing soft wool; flowering areoles producing tufts of long white hairs; flowers about 5 cm. long, greenish yellow to purplish; inner perianth-segments white, acute; fruit reddish or green, 5 cm. broad; pulp red; seeds black, shining.

Type locality: America, but no definite locality cited.

Distribution: Antigua to Anegada, St. Croix, St. Thomas, Culebra, Porto Rico, Mona, and Desecheo.

Philip Miller states that this species was sent to him from the British Islands of America in 1728. The combination Cereus royenii is generally credited to Haworth (1812), but it was first used by Miller in 1768, although the true Cactus royenii of Linnaeus may not be the one he actually. described.

Cereus barbatus Wendland (Salm-Dyck, Cact. Hort. Dyck. 1844. 29. 1845) was given as a synonym of Cereus floccosus. Cereus royenii armatus Salm-Dyck (Walpers, Repert. Bot. 2: 276. 1843), and C. royenii floccosus Monville (Labouret, Monogr. Cact. 343. 1853), are given only as synonyms.

Cephalocereus fouachianus Quehl (Monatsschr. Kakteenk. 20: 39. 1910), name only, belongs here.

Cereus gloriosus (Pfeiffer, Enum. Cact. 80. 1837) was printed as a synonym.

Illustrations: Monatsschr. Kakteenk. 12: 6, as Pilocereus royenii; Journ. N. Y. Bot. Gard. 7: f. 4, this last as Pilocereus sp.

Figure 74 is from a photograph taken by Frank E. Lutz on Desecheo Island, in 1914; figure 69 represents a flower of the plant from Culebra Island, collected by Dr. Britton.

Fig. 75.—Cephalocereus robustus.

Fig. 76.—Cephalocereus cometes.

Fig. 75.—Cephalocereus robustus.

Fig. 76.—Cephalocereus cometes.

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