Plumularia lagenifera Allman, 1885

Schuchert, Peter, 2013, The status of Plumularia lagenifera Allman, 1885 (Cnidaria, Hydrozoa) and related species, Zootaxa 3613 (2), pp. 101-124 : 118

Plumularia lagenifera Allman, 1885

Figs 1 , 2C , 8A–F , 9A–D , 10A–D

Plumularia lagenifera Allman, 1885: 157 , pl. 26 figs 1–3. – Nutting 1900: 65, pl. 6 figs 6–10. – Fraser 1911: 82. – Fraser 1937: 188: pl. 43 fig. 228. – Jäderholm 1903: 291. – Stechow 1913: 90, figs 57–58. – Ansín Agís, Ramil & Vervoort, 2001: 242.

Plumularia californica Marktanner-Turneretscher, 1890: 255 , pl. 6 figs 4 & 4a [type locality: Puget Sound, NE Pacific]. – Nutting 1900: 65.

Plumularia lagenifera var. septifera Torrey, 1902: 78 , pl. 11 figs 101–102 [type locality: Catalina Island , California].

not Plumularia lagenifera . – Millard, 1957: 230. – Millard, 1975: 392, fig. 124A–D [= Plumularia gaimardi ].

Material examined. Specimens listed in table 1 (includes the schizoholotype and a colony identified by C. M. Fraser].

Description of population of the NE Pacific: As P. setacea described above but at least some abcauline walls of hydrotheca distinctly convex, plume heights 2–10 cm, occasionally also branched, 5–9 hydrothecae per hydrocladium, cauline and hydrocladia segments often larger. Only one nematotheca on apophyses of stem segments. Gonothecae larger, flattened, colonies always gonochoristic.

Dimensions. See table 1.

Type locality. Vancouver Island , British Columbia, Canada .

Distribution. Reliable records are from the NE Pacific reaching from Alaska to California. Also reported from Japan and Chile.

Figures

FIGURE 1. Plumularia lagenifera, living colony from Friday Harbor, San Juan Islands (USA, WA). The height of the plumes is about 2–3 cm (voucher specimen MHNG-INVE-78966). The yellow bulbs along the stem are female gonothecae.

FIGURE 2. Comparison of colony silhouettes and variability. Scale bar valid for all sections. (A) Fertile Plumularia setacea from the intertidal region of Roscoff (Brittany, MHNG-INVE-79899). Note the small size of the plumes, likely due to the turbulent environment. (B) Plumularia setacea from a depth of at least 20 m collected in the Bay of Morlaix (Brittany, MHNG- INVE-36292). Note the large plumes, some of which are even branched. (C) Plumularia lagenifera, colony from Vancouver Island and identified by C. M. Fraser (BMHN1915.3.6.44). (D) Plumularia gaimardi, form on laminarians (MHNG-INVE- 34019). (E) Plumularia gaimardi, form with deep hydrothecae (SAM-H-1788).

FIGURE 8. Plumularia lagenifera Allman, 1885, microscopic details of the schizoholotype (BMNH 1959.10.21.1). (A) Stem segments. (B) Hydrothecae and ahydrothecate segment from hydrocladium. (C–D) Abcauline sides of hydrothecae. (E) Median inferior nematotheca. (F) Lateral nematotheca seen from inner side.

FIGURE 9. Microscopic details of some Plumularia lagenifera samples from the NE Pacific. First row (A1 to D1): stem segments and first hydrocladial segment. Second row (A2 to D2): hydrothecate and ahydrothecate segments from the cladia. Third row (A3 to D4): abcauline walls of hydrothecae.

FIGURE 10. Variation of the gonothecae of Plumularia lagenifera, sex is indicated by symbols (♀ female, ♂ male).