Autor: IVON MERCEDES RAMIREZ MORILLO
Hechtia lepidophylla is described and illustrated. A complete description including characters of staminate, pistillate, and fruiting plants is included, with details of growth pattern and ecological characteristics, as well as characters to distinguish it from species with similar vegetative and floral characters such as H. argentea, H. glomerata, and H. texensis.
Hechtia edulis I. Ramírez, Espejo & López-Ferr. (Bromeliaceae) is described and illustrated from Copper Canyon National Park, Chihuahua, Mexico. The new entity is characterized by its caespitose, monocarpic habit, by its small rosettes, and by the similarity of its staminate and pistillate inflorescences in size, the simple panicles with the branching much shortened, the flowers sessile, the floral bracts scarious, and pistillate flowers with petals green and carnose.
A new species of Hechtia, H. pueblensis,from the Mexican State of Puebla, is described and illustrated. The new taxon
is well documented with illustrations and photographs of staminate and pistillate flowers, as well as fruits. It shares its
small-sized rosette and usually simple panicles with H. lyman-smithii(from a nearby geographical region in Oaxaca) and
with H. fragilis(from Puebla and Oaxaca).
The new name Hechtia aquamarinais proposed to replace Hechtia pueblensisI. Ramírez and Jiménez, a name blocked
by H. pueblensisBurt-Utley, Utley & García-Mendoza.
Epitypes are designated for the Mexican speciesHechtia schottiiandHechtia
stenopetala. Complete descriptions of the two taxa are presented as well as specimen citations and
iconography depicting relevant characteristics of the species and plants in habitat. The first species, known
only from the States of Campeche and Yucata´ n, was based upon pistillate material (old fruits and immature
pistillate buds) and leaf fragments; the epitype adds the staminate flowers and complete leaves. The second
species, restricted to the Veracruz State, was based upon a plant with old, open fruits; the epitype adds the
staminate flowers and leaves.
A new species of Hechtia from the Mexican State of Tamaulipas is herein proposed as new: Hechtia hernandezsandovalii,
which is known only from the municipality of Villa de Miquihuana in the southwestern portion of the state.
The new species is easily recognized by the following combination of characters: its white cotton-like indument (turning
brownish with age) on the branches, rachis, and peduncle of both staminate and pistillate inflorescences. The new taxon
is compared with H. glomerata, a species morphologically similar.
Hohenbergia mesoamericana I. Ramírez, Carnevali et Cetzal is proposed as new, described, and illustrated. Because the genus was previously known only from the Antilles, Colombia, Venezuela, and Brazil, this new species represents the ﬁ rst record of Hohenbergia for Mexico and Mesoamerica. The new species is morphologically similar to the Jamaican H. spinulosa Mez in having the bracts subtending the spikes far exceeding them (especially the lowermost) and green petals, but differs in several characters, including a more elongate peduncle and rachis resulting in a less dense inﬂorescence, shorter ﬂoral bracts, and pedicellate spikes. The conservation status of the new species is evaluated as critically endangered (CR) according to IUCN criteria.
The following represent new specific taxa in the Orchidaceae from Venezuela: Epidendrum cesar-fernandezii Carnevali & I. Ramírez, E. reclinatum Carnevali & I. Ramírez, Pleurothallis loreae Carnevali & I. Ramírez, P. escalerensis Carnevali & C. A. Luer, and P. stellata I. Ramírez & Carnevali. A new nothospecies, Epidendrum Xgransabanensis Carnevali & I. Ramírez, is proposed as the product of the introgression between Epidendrum ibaguense HBK and E. secundum Jacquin. A new subspecies, Liparis nervosa subsp. granitica Carnevali & I. Ramírez, is proposed to accommodate populations of Liparis nervosa (Thunberg) Lindley restricted to granitic outcrops in the northwestern Guayana in Venezuela. Descriptions, illustrations, and discussions of affinities are provided for the newly proposed taxa.
Two new species in the Tillandsia utriculata (L.) L. complex (Bromeliaceae) from Mexico are proposed. Both are herein described and illustrated with their affinities discussed. The first new entity, T. aesii I. Ramírez & Carnevali from the states of Jalisco, Guerrero, and Oaxaca, is similar to T. makoyana Baker, but the new taxon has an open rosette with leaves that are green adaxially and white lepidote abaxially (vs. a funnelform rosette with gray leaves on both surfaces in T. makoyana), actinomorphic flowers with a light apple-green corolla (vs. zygomorphic with a purple to light purple corolla). The second taxon proposed here, T. pinicola I. Ramírez & Carnevali, from the state of Oaxaca, is also similar to T. makoyana, but is a smaller plant with a more compact growth habit and leaves with proportionally shorter leaf blades that abruptly attenuate from a broad sheath (vs. gradually attenuate into the proportionally longer blade) into a sub-acicular apex. It is also characterized by typically growing on pines, hence the epithet.
Tillandsia tehuacana I. Ramírez & Carnevali, a new species in the T. utriculata (L.) L. complex (Bromeliaceae) from Puebla, Mexico, is described and illustrated. The new entity is similar to T. makoyana Baker, but the rosettes are cylindrical (vs. funnelform), the leaves are coriaceous (vs. sclerotic), the leaves have a proportionately larger sheath compared with the lamina (vs. leaves with the sheath and lamina subequal), and the rachis of the inflorescence is sharply flexuous (vs. straight). The new species is also characterized by its habit, since it usually grows in dry thorn-scrub-cactus associations, while T. makoyana grows in different vegetation types, including oak and low deciduous forests. The new entity is also similar to T. pinicola I. Ramírez & Carnevali, but the new taxon differs by its larger rosette and inflorescence, its tubular rosette with leaves that are gray and purple and white lepidote on both sides (vs. a funnelform rosette with green leaves and only sparsely white lepidote abaxially), the floral bracts much shorter than the sepals (vs. subequal), the flowers ovate in shape (vs. tubular), and the three stigmatic lobes twisted together (vs. not twisted together).