Alsophila bullata Baker

Janssen, Thomas & Rakotondrainibe, France, 2007, An update of the revision of Cyathea subgen. Alsophila sect. Gymnosphaera (Cyatheaceae) in Madagascar and the Comoros including a discussion of putative hybridization events, Adansonia (3) 29 (2), pp. 195-213 : 208

publication ID

https://doi.org/ 10.5281/zenodo.5187406

persistent identifier

https://treatment.plazi.org/id/03EC8788-C209-FFD1-FC84-CAA8B1C9FB61

treatment provided by

Carolina

scientific name

Alsophila bullata Baker
status

 

Alsophila bullata Baker View in CoL

Journal of the Linnean Society, Botany, London 15: 412 (1876). — Cyathea bullata (Baker) Domin, Pteridophyta View in CoL : 262 (1929). — C. bullata (Baker) Rakotondr. , Bulletin du Muséum d’Histoire naturelle, Paris, 4 e série, sect. B, Adansonia View in CoL , 10 (4): 376 (1988), comb. superfl.; Rakotondrainibe & Lobreau-Callen, Adansonia View in CoL , sér. 3, 21 (1): 141 (1999). — Type: Madagascar. “Intérieur de Madagascar ”, IV.1876, Pool s.n. (holo-, K!).

REMARKS

The holotype of Alsophila bullata Baker, Pool s.n. (K!), comprises two identical sheets carrying fragmentary specimens. Each sheet contains a single entirely fertile pinna lacking an associated rachis fragment. In the pinnules, five to six proximal segments are free and sessile, 1 × 0.3 cm and have a crenulate margin. Segments are progressively adnate and the distal segments are confluent. The sori are exindusiate and display small receptacular paraphyses, shorter than the sporangia. The costa has a dense hairy indument on its adaxial face and bullate as well as bicolorous lanceolate scales on its abaxial face. Taking into account our current knowledge of sect. Gymnosphaera , these two sheets may correspond to at least five taxa: C. boiviniiformis and its two varieties ( var. lobata , var. madagascarica ), C. impolita , or C. poolii . In the absence of sterile pinnules (dimorphism?), the leaf apex (distribution of fertile pinnae?), and the petiole base (scale morphology?), the material is ambiguous and the choice of an epitype to allow for a precise application of the name A. bullata Baker would be much more arbitrary than in the case of A. boivinii Mett. ex Ettingsh. The holotype of A. boivinii, Boivin s.n., collected in the Comoros, can be confounded with two taxa only, that are, according to the presently known material, not occurring in the Comoros. The holotype of A. bullata, Pool s.n., has been collected in Madagascar and can be confounded with five distinct Madagascan taxa. This difference led to the decision to epitypify A. boivinii , but to refrain from epitypification of A. bullata .

Kingdom

Plantae

Phylum

Tracheophyta

Class

Polypodiopsida

Order

Cyatheales

Family

Cyatheaceae

Genus

Alsophila

Kingdom

Plantae

Phylum

Tracheophyta

Class

Polypodiopsida

Order

Cyatheales

Family

Cyatheaceae

Genus

Cyathea

Kingdom

Plantae

Phylum

Tracheophyta

Class

Polypodiopsida

Order

Cyatheales

Family

Cyatheaceae

Genus

Cyathea

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Malvales

Family

Malvaceae

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Malvales

Family

Malvaceae

Loc

Alsophila bullata Baker

Janssen, Thomas & Rakotondrainibe, France 2007
2007
Loc

Adansonia

Rakotondrainibe & Lobreau-Callen 1999: 141
1999
Loc

Adansonia

1988: 376
1988
Loc

Cyathea bullata (Baker)

Domin 1929: 262
1929
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