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.
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).
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.
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.
Se describen e ilustran dos nuevas especies de Hechtia, H. pretiosa y H. zamudioi. Ambos taxa son endémicos del centro de México, el primero de Guanajuato y el segundo de Querétaro.
Hechtia schottii is a terrestrial, rosetofilous, dioecious, polycarpic succulent herb, that grows mainly in shrubby associations, and less frequently, in secondary low caducifolious forests, both on calcareous soils or limestone outcrops in Yucatan and Campeche States, Mexico. We studied phenology, floral and pollination biology, and breeding system at Calcehtok, Yucatan, during two flowering seasons. Plants bloom mainly during the dry season (November-April) and disperse seeds during the rainy season (May-October). Both floral morphs have diurnal anthesis; pollen is removed ca. 1 h after anthesis starts and both floral morphs are visited by several insect species, especially bees, but results suggest that the introduced honey bee, Apis mellifera, is the pollinator. Controlled crossings show that the species is functionally dioecious and requires to be serviced by pollinators based on fruit setting only in unassisted cross pollination crosses.
Se describen e ilustran Hechtia nuusaviorum y H. perotensis. La primera es una especie endémica de Oaxaca y la segunda se conoce de los estados de Veracruz y de Puebla, de la región conocida como Valle de Perote.