hornwort

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Related to Hornworts: Vascular plants, Bryophytes

hornwort

[′hȯrn‚wȯrt]
(botany)
References in periodicals archive ?
At the transition from archesporial cells to sporocytes in mosses and hornworts, special expandable walls of callose or mucopolysaccharide are formed within the vegetative cell walls.
In mosses and hornworts, quadripolar spindles are organized by P-MTOCs (Fig.
In both hornworts and mosses, AMS-like arrays accompany the two rounds of plastid division (Fig.
Unlike the monoplastidic sporocytes of mosses and hornworts in which the establishment of quadripolarity is associated with two divisions of the single plastid, the sporocytes of most liverworts are polyplastidic.
Several complex thalloids exhibit monoplastidic meiosis with precocious establishment of quadripolarity similar to mosses and hornworts, but without deep cytoplasmic lobing (Shimamura et al.
Preprophasic microtubule systems and development of the mitotic spindle in hornworts (Bryophyta).
New insights into morphology, anatomy, and systematics of hornworts, pp 139-171.
A synthesis of hornwort diversity: Patterns, causes and future work.
Is there further evidence (characters), so far largely overlooked, amid the many characters used in cladistic analysis, and recently in molecular genetic analysis, that might be brought to bear on the question of relative filiation "position" of hornworts (anthocerophytes) and liverworts (marchantiophyes)?
An interesting phylogenetic diagram is in Lee (1999: 186), which infers that Coleochaete may be more along the path to liverworts and hornworts, than to mosses--Nitella and Chara being more aligned with mosses and vascular land plants.
Anatomy, development and classification of hornworts.