Echinocactuspruinosus Otto in Pfeiffer, Enum. Cact. 54. 1837.
Cactus pruinosus Monville in Steudel, Nom. ed. 2. 1: 246. 1840.
Cereus pruinosus Otto in Förster, Handb. Cact. 398. 1846.
Cereus laevigatus Salm-Dyck, Cact. Hort. Dyck. 1849. 204. 1850.
Plant usually tall, with a more or less definite trunk; ribs 5 or 6, very high, separated by broad intervals; spines few, the radial ones 5 to 7, brownish; central spine solitary, 3 cm. long; flowering areoles large, brown-felted; flowers about 9 cm. long; upper scales and outer perianth-segments 1 cm. long or less, rounded at apex; inner perianth-segments longer and thinner than the outer ones. ovary with numerous brown-felted areoles; fruit ovoid, spiny, 6 to 7 cm. long.
Type locality: Mexico.
Distribution: South-central Mexico.
This plant is certainly native in south-central Mexico, and distinguishable from the related cultivated L. griseus by fewer ribs, larger flowers, and ovoid fruit.
Cereus roridus (Pfeiffer, Enum. Cact. 54. 1837) was given as a synonym of Echinocactus pruinosus.
Cereus edulis Weber (Monatsschr. Kakteenk. 10: 55. 1900) is another name for this species, never described.
Illustrations: Bull. Soc. Acclim. France 52: f. 1, as Cereus pruinosus; Bradley, Hist. Succ. Pl. ed. 2. pl. 12, as Cereus ameri-canus octangularis; Monatsschr. Kakteenk. 18: 171, in part; 21: 37; U. S. Dept. Agr. Bur. Pl. Ind. Bull. 262: pl. 8; pl. 13, f. 2; MacDougal, Bot. N. Amer. Des. pl. 23; Journ. N. V. Bot. Gard. 8: f. 6, all these as Cereus eburneus.
Figure 130 shows a fruit collected by H. H. Rusby in Oaxaca in 1910.
5. Lemaireocereus (?) longispinus sp. nov.
Erect, rather stout, light green, the young growth more or less glaucous; ribs 6, broad at base, somewhat acute, more or less undulate; areole borne at the tops of the undulations; radial spines about 10, spreading or even reflexed, acicular; central spine elongated, porrect, flattened above, up to 8 cm. long, gray; flowers and fruit unknown.
Collected by F. Eichlam in Guatemala in 1909.
Figure 131 is from a photograph of the type specimen in the collection of the New York Botanical Garden.
Was this article helpful?
You Might Just End Up Spending More Time In Planning Your Greenhouse Than Your Home Don’t Blame Us If Your Wife Gets Mad. Don't Be A Conventional Greenhouse Dreamer! Come Out Of The Mould, Build Your Own And Let Your Greenhouse Give A Better Yield Than Any Other In Town! Discover How You Can Start Your Own Greenhouse With Healthier Plants… Anytime Of The Year!