NO. 1 TAYLOR: PACIFIC MARINE ALGAE 275 



9. Tetrasporangial son* single near the tips of the terminal segments 



Acrosorium 



9. Tetrasporangial sori marginal or in marginal proliferations . . 



Cryptopleura 



GALOGLOSSA (Harvey) J. Agardh, 1876 



Plants forming flat, dichotomously forking blades with a marked per- 

 current midrib composed of elongated superficial cells obscuring a broad 

 axial cell row, the lateral membrane of one cell layer, the cells in de- 

 cussate rows; secondary branching proliferous from the midrib; tetra- 

 hedral sporangia formed in decussate series in sori near the tips of the 

 blades ; cystocarps sessile, prominent on the midribs, usually a single one 

 near the distal end of a segment, enveloped in a thin pericarp. 



Caloglossa Leprieurii (Montagne) J. Agardh 



Taylor 1928, p. 161 ; 1937, p. 345, pi. 53, figs. 2, 3. 



Colombia : Valle, mouth of Rio Dagua, Bahia Buenaventura, Killip 

 no. 33002 p. p., 3 Feb. 1939. Ecuador: Archipielago de Colon, with 

 Bostrychia on the roots of Rhizophora in a lagoon near Pta. Albemarle, 

 I. Isabela, no. 34-100, 12 Jan. 1934. Ibid., with Catenelia and Bostry- 

 chia on Rhizophora roots in a lagoon near buildings. Academy Bay, I. 

 Santa Cruz, no. 34-301 B p. p., 20 Jan. 1934. Esmeraldas, on roots of 

 Rhizophora along the shore of Bahia San Francisco, no. 34-490 A p. p., 1 1 

 Feb. 1934. 



HEMINEURA Harvey, 1847 

 Thallus flat, foliaceous, with pinnate marginal subsidiary blades; 

 each lobe with a midrib; structurally the cell rows of the second order 

 showing intercalary divisions; procarps with 2 carpogenic branches; 

 gonimoblasts with spores in chains. 



Hemineura (?) Howellli n. sp.i'^i' ^^^ 

 Plate 88, Fig. 2 

 Plants to 15 cm tall from a small disciform holdfast, below stalked, 

 the stalk eventually sparingly branched, above narrowly foliaceous, dull 



171 Hemineura Howellii n. sp.— Plantae ad 15 cm altitudine, stipitatae, supra 

 anguste foliaceae, carnoso-membranaceae; segmentis 5-10 cm long., 4-10 mm_ lat., 

 infra teretibus, ad cacumina rotundata paululum teretibus; costa adest, infra 

 denudata ad formandos stipites; marginibus crenulatis ad prolifero-denticulatos; 

 tetrasporangiis in maculis utroque in latere costae ramorum circularium ad lance- 

 olato-stipitatos proliferorumque, ac formatorum e marginibus costaque segmentorum 

 primariorum vegetativorum. Planta typica in loco dicto I. Santa Maria, Ecuador, 

 legit W. R. Taylor no. 34-225, 17 Jan. 1934. 



172 Named in recognition of the botanical exploration of the Galapagos Islands 

 by Dr. John T. Howell in 1932. 



