Ulmus ismaelis is a small tree discovered circa 1997 in southern Mexico by Ismael Calzada in riparian forest along the Mixteco River system in northeastern Oaxaca, where it grows among large boulders in the limestone canyons.[1] The tree has since been found in Honduras and El Salvador.[2] The tree is exceptional in its habitat: dry places, sometimes with <500 mm per annum precipitation, and comparatively low altitudes of 450–750 m.[2]
Rarely growing to> 15 m in height, typically < 10 m with a trunk diameter of 30 cm; the tree has exfoliating orangish bark. The ovate leaves are coriaceous, < 9.6 cm in length by 4.6 cm broad, acute at the apex, pinnately veined, on short (2–5 mm) petioles; the colour ranges from dull green to light brown. The apetalous flowers are arranged as short racemes on leafless twigs, sparsely clustered on < 7 mm peduncles. The samarae are < 22 × 13 mm, tapering at the base to a <8 mm stalk, with ciliate margins, and are shed during June and July in Mexico;[1] in Honduras and El Salvador the tree flowers at the time of foliage change, just before the fall of the leaves of the previous season during the months of February and March, and fructifies from March to the end of April, coinciding with the emergence of the new season's leaves.[2]
Samarae
Leaf of seedling
No information available.
The tree is extremely rare in cultivation; it was introduced to Europe in 2019 as seed sent to the Grange Farm Arboretum, Lincolnshire, UK. Seedlings were later disseminated by the arboretum to Butterfly Conservation's main trials site, Great Fontley, Hampshire, UK, and the Escuela Tecnica Superior de Ingenieros de Montes, Universidad Politecnica de Madrid, Spain.
The species is named for the Mexican botanist and collector Dr Juan Ismael Calzada, who discovered the tree.
Ulmus ismaelis is a small tree discovered circa 1997 in southern Mexico by Ismael Calzada in riparian forest along the Mixteco River system in northeastern Oaxaca, where it grows among large boulders in the limestone canyons. The tree has since been found in Honduras and El Salvador. The tree is exceptional in its habitat: dry places, sometimes with
Ulmus ismaelis est parva familiae Ulmacearum arbor florens, in Mexico meridiano nuperrime inventa, et solum in silvis ripariis per systema Mixteci Fluminis in Oaxaca septentrio-orientali endemica, ubi inter magnis saxis in vallibus calcareis crescere solet.
Arbori, quae plus quam 15 m alta raro attingit, est aurantiacus cortex exfolians. Folia sunt ovata et coriacea, minus quam 9.6 cm longa et 4.6 cm lata, apice acuta, pinnatinervata, in brevibus (2–5 mm) petiolis; color a viride sordido ad fuscum dilutum variat. Flores, apetali, ordinantur ut breves racemi in ramunculis foliis carentibus, in pedunculis minus quam 7 mm longis sparsim fasciculatis. Fructus sunt samarae minus quam 22 mm ad 13 mm latae, basi ad pedicellum minus quam 4 mm longum decrescens, et mensibus Iunio Iulioque exuuntur.[1]
Arbor coli non putatur.
Scientia caret.
Appellatur planta ex Doctore Ioanne Ismael Calzada, botanista et conlectore, qui eam invenit.
Haec stipula ad biologiam spectat. Amplifica, si potes! Ulmus ismaelis est parva familiae Ulmacearum arbor florens, in Mexico meridiano nuperrime inventa, et solum in silvis ripariis per systema Mixteci Fluminis in Oaxaca septentrio-orientali endemica, ubi inter magnis saxis in vallibus calcareis crescere solet.
Ulmus ismaelis là một loài thực vật có hoa trong họ Ulmaceae. Loài này được Todzia & Panero miêu tả khoa học đầu tiên năm 1998.[1]
Bài viết liên quan đến bộ Hoa hồng này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Ulmus ismaelis là một loài thực vật có hoa trong họ Ulmaceae. Loài này được Todzia & Panero miêu tả khoa học đầu tiên năm 1998.
