Lemaireocereus treleasei Rose
Publication Contributions from the United States National Herbarium 12(10): 426 (1909).
"THE GENUS CEREUS AND ITS ALLIES IN NORTH AMERICA.
…
Lemaireocereus treleasei Rose, sp. nov. PLATE LXX.
Plants 5 to 7 meters high, simple or with a few strict branches; ribs about 20; areoles closely set, each with a peculiar V-shaped depression just above it; spines rather short, yellowish; flowers pinkish, 4 to 5 cm. long, diurnal; bracts on ovary and flower tube bearing slender whitish bristles; fruit red, about 5 cm. in diameter, covered with clusters of deciduous spines; seeds black with a dull rugose surface and a large oblique basal hilum.
Collected by J. N. Rose on the road between Mitla and Oaxaca, September 5, 1906 (no 11300, type). The species had previously been collected by Dr. William Trelease in this same region.
Type U. S. National Herbarium no 454090.
This species has flowers and fruit much resembling those of Lemaireocereus stellatus but it has a different habit, the stems have more ribs and it has different areoles. Mr. C.H. Thompson, of the Missouri Botanical Garden, has called my attention to the fact that this V-shaped groove is not known to occur in any of our North American species of Cereus, but is a character of several South American species.
Explanation of Plate LXX.-From a photograph taken by Dr. D. T. MacDougal."
Des mêmes auteurs: The Cactaceae 2:93-94, fig. 137 (1920):
"12. Lemaireocereus treleasei Britton and Rose, Contr. U. S. Nat. Herb. 12:426. 1909.
Cereus treleasei Vaupel, Monatsschr. Kakteenk. 23:37. 1913.
Plants 5 to 7 meters high, simple or with a few strict branches; ribs about 20; areoles approximate with a peculiar V-shaped depression just above each one; spines rather short, yellowish; flowers pinkish, 4 to 5 cm. long, diurnal; scales on ovary and flower-tube subtending slender whitish bristles; fruit red, about 5 cm. in diameter, covered with clusters of deciduous spines; seeds black with a dull, rugose surface and a large oblique basal hilum.
Type locality: Road between Mitla and Oaxaca, Mexico.
Distribution: Oaxaca, Mexico.
In flower and fruit this much resembles L. stellatus, but has a different habit, more ribs and different areoles. This plant is not common in the deserts about Oaxaca, but when it does occur is found in clumps. It is characterized by its strict elongated stems, which seldom branch.
Illustration: Contr. U. S. Nat. Herb. 12: pl. 70.
Figure 137 is from a photograph taken by Dr. MacDougal at the type locality in 1906."
treleasei: en l'honneur du botaniste états-unien William Trelease (1857-1945).
Fiche créée le 31/12/2004.
Synonyme de
Stenocereus treleasei (Rose) BackebergCommentaires
Publication:"THE GENUS CEREUS AND ITS ALLIES IN NORTH AMERICA.
…
Lemaireocereus treleasei Rose, sp. nov. PLATE LXX.
Plants 5 to 7 meters high, simple or with a few strict branches; ribs about 20; areoles closely set, each with a peculiar V-shaped depression just above it; spines rather short, yellowish; flowers pinkish, 4 to 5 cm. long, diurnal; bracts on ovary and flower tube bearing slender whitish bristles; fruit red, about 5 cm. in diameter, covered with clusters of deciduous spines; seeds black with a dull rugose surface and a large oblique basal hilum.
Collected by J. N. Rose on the road between Mitla and Oaxaca, September 5, 1906 (no 11300, type). The species had previously been collected by Dr. William Trelease in this same region.
Type U. S. National Herbarium no 454090.
This species has flowers and fruit much resembling those of Lemaireocereus stellatus but it has a different habit, the stems have more ribs and it has different areoles. Mr. C.H. Thompson, of the Missouri Botanical Garden, has called my attention to the fact that this V-shaped groove is not known to occur in any of our North American species of Cereus, but is a character of several South American species.
Explanation of Plate LXX.-From a photograph taken by Dr. D. T. MacDougal."
Des mêmes auteurs: The Cactaceae 2:93-94, fig. 137 (1920):
"12. Lemaireocereus treleasei Britton and Rose, Contr. U. S. Nat. Herb. 12:426. 1909.
Cereus treleasei Vaupel, Monatsschr. Kakteenk. 23:37. 1913.
Plants 5 to 7 meters high, simple or with a few strict branches; ribs about 20; areoles approximate with a peculiar V-shaped depression just above each one; spines rather short, yellowish; flowers pinkish, 4 to 5 cm. long, diurnal; scales on ovary and flower-tube subtending slender whitish bristles; fruit red, about 5 cm. in diameter, covered with clusters of deciduous spines; seeds black with a dull, rugose surface and a large oblique basal hilum.
Type locality: Road between Mitla and Oaxaca, Mexico.
Distribution: Oaxaca, Mexico.
In flower and fruit this much resembles L. stellatus, but has a different habit, more ribs and different areoles. This plant is not common in the deserts about Oaxaca, but when it does occur is found in clumps. It is characterized by its strict elongated stems, which seldom branch.
Illustration: Contr. U. S. Nat. Herb. 12: pl. 70.
Figure 137 is from a photograph taken by Dr. MacDougal at the type locality in 1906."
Étymologie
Lemaireocereus: en l'honneur du botaniste français Charles Lemaire (1800-1871), cierge de Lemaire.treleasei: en l'honneur du botaniste états-unien William Trelease (1857-1945).
Numéros de collecte
Vous pouvez chercher les numéros de collecte pour cette espèce dans :- la base de Ralph Martin : Lemaireocereus treleasei
- la base de Christophe Ludwig : Lemaireocereus treleasei
Forum
Vous pouvez faire une recherche sur le forum.Auteur
philippe (contacter l'auteur ou écrire aux admins de l'encyclopédie)Fiche créée le 31/12/2004.
Fiches de botanistes :
Rose, Joseph Nelson
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Synonymes :
Aucune fiche.
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