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·Contribution to the Marine Chlorophyta of Hawaii, II Additional

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·Contribution to the Marine Chlorophyta of Hawaii, II Additional · Contribution to the Marine Chlorophyta of Hawaii, II Additional Records' W ILLIAM J. GILBERT THE ANNOTATED LIST which follows is com­ pyrenoids in each cell confirm the plants as prised mostly of new or previously unreported being E. clathrata. marine green algae from the Hawaiian Islands. COLLECTIONS: Gilbert 9379, entangled on Sources of material studied are listed in an ear­ other algae, Ala Moana Park, Honolulu, Oahu, lier paper (Gilbert, 1962 ) with the except ion April 7, 1959; 9969, in wash of littl e bay at of a few incidental collections forwarded to Milolii, Hawaii, May 30, 1959. me during recent months by Dr. Maxwell S. 2. Enteromorpha flexuosa (WuIfen ) J. Agardh, Dory. 1883, p. 126. This nearly completes a survey of the marine COLLECTIONS : Gilbert 9016, W aikiki, Hono­ Chlorophyta of this area which was initi ated in lulu, Oahu, March 11, 1959; 9286, Y2 mile E 1959 by a four-month visit to the islands. The of McGregor's Pt., Maui, March 25,1959; 9542, writer has still some material that is not named, growi ng on basalt near high tide line, W ailua, particularly of Enterom orpha and Cladophora, Kauai, April 25, 1959; 9576, attached to rocks and only species in these genera are listed for in active sand in from 1- 3 feet of water at low which there seems to be reasonable certainty tide level, Anahola, Kauai, April 26, 1959; at this time. 9922, from rocks which were slightly covered The following species constitute new records with sand, submerged at high tide, and fre­ for the Hawaiian Islands : Enterom orpha clath­ quently washed by wave action at low tide, rata (Roth) Greville, E. plumosa Kiitzing, Mo­ Hookena, Hawaii, May 25, 1959; 10061, from nostroma oxyspermum (Kiitzing) Doty, Viva rocks on shore between low and high tide expansa (Setchell) Serchell and Gardner, U. levels, between Kawela and Kamaloo, Molokai, reticulata f. delicatula n. f., Chaetomorpha June 5, 1959. brachygona Harvey, C. gracilis Kiitzing, C. in­ dica Kiitz ing, C. paucitatis n. sp., Rhizoclonium 3. Enteromorpha intestinalis (L. ) Link, 1820, grande Bprgesen, R. hookeri Kiitzing, R. ripa­ p. 5. rium (Roth) Harvey, Cladophora dotyana n. COLLECTIONS: Gilbert 9175, Camp 1, Spreck­ sp., C. hemisphaerica Gardner, Boodleopsis ha­ lesville, Maui, March 23, 1959; 9382, canal at waiiensis n. sp., Codium saccatum Okamura. Riv er Sr., near Nimitz Highway, Honolulu, Type material is deposited at the University Oahu, April 7,1959. of Michigan Herbarium , Ann Arbor. 4. Enteromorpha lingulata J. Agardh, 1883, p. 1. Enterom orpha clathrata (Roth) Greville, 143. 1830, p. 181. COLLECTION: Gilbert 9507, attached to In both collections the plants are slender rocks covered with a shallow layer of active throughout and have many narrow branches sand, Haleiwa Park, Oahu, April 18, 1959; some of which end in a uniseriate row of cells. 9729, on basalt and coral rocks, Anahola, Kauai, The arrangement of cells in longitudinal rows May 2,1959. throughout the plants and the presence of 3:-5 5. Enterom orpha plumosa Kiitzing, 1843, p. 300, pI. 20, fig. 1. 1 Albion College, Albi on, Michigan. Th is study was supp orted by two grants from the National Sci­ COLLECTION : Gilbert 9027, scraped from ence Found ation (NSF G 710 7 and NSF G25 137). walls of tide pool filled with recurring waves, Manuscript received May 8, 1963 . Diamond Head, Oahu, March 14, 1959. 482 Marine Chlorophyta of H awaii, II-GILBERT 483 6. Enteromorpha ?tubulosa Kiitzing, 1856. Tab. material from cement or rocks in the intertidal Phyc. VI, p. 11, pl. 32, fig. 2. zone and of free-floating material in quiet tide The following collection is assigned to this pools. species wit h considerable uncertainty, especially COLLECTIONS: Gilbert 9131, Kahana, W est since the cells appear to have 1-3 pyrenoids in­ Maui, March 22, 1959; 9520, forming a distinct stead of but one as usually noted in the litera­ zone at high tide level on cement wall of pier tur e. running out from Natatorium -end of Ku hio COLLECTION: Gilbert 9705, attac hed to clay Beach, Waikiki, Honolulu, Oahu, April 22, tile at Kauai Boat Club between Kekaha and 1959; 9636, in tide pool at POrt Allen, Kauai, W aimea, Kauai, April 30, 1959. near Salt Pond Beach, April 27, 1959; 9933, 7. M onostroma oxyspermum (Kiitzing) Dory, from tide pool at H onaun au, Hawaii, May 26, 1947, p. 12. 1959; 9978, from rocks, intertidal zone, 1.5 All of the collections listed below appear to miles S of Kailua, Hawaii, May 31, 1959. be one species. Surface views and cross section 9. Viva fasciata Delile, 1813, p. 153, pI. 58, studies were made. The average cell diameter fig. 5. is almost the same (a bout 9 p,) in all collec­ This is a commo n species, previously reported tions and the thalli (with the exception of Gil­ from Hawaii by several authors. It is extremely bert 9377) are all about 20- 25 p, thick. Cells variable in form. Only a few of the collections. were grouped in twos, thre es, and fours in sur­ studied are listed. face view and all appeared somewhat taller COLLECTIONS ; Gilbert 9218, 9219, Hookipa than wide in cross sectional view, the thickness of the membrane external to the cells contrib­ Park, W est Maui, March 24, 1959; 9356, Hau­ uting mostly to the variation in thickness of ula Park, Oahu, April 4, 1959; 9635, low tide the frond. level in active surf, near Salt Pond, Port Allen, COLLECTIONS: Gilbert 9377, on cement wall Kauai, April 28, 1959; 9709, on rocks of break­ at high tide level in canal, Ala Moans Park, water, N awiliwili Boat Harbor, Kauai, April Honolulu, Oahu , April 7, 1959 ; 9481, wall of 30, 1959; 9921, in 1- 3 feet of water, attached N atatorium, W aikiki, Honolulu, Oahu, April to rocks, H ookena, Hawaii, May 25, 1959; 15, 1959 ; 9785, in quiet water around man­ 10116, rocks in qui et water, Mapalehu, Molo­ grove roots near docking area, Coconut Island, kai, June 7, 1959. Kaneohe Bay, Oahu, May 14, 1959; Meiiez 722, 10. Viva lactuca Linnaeus, 1753, p. 1163. from basalt rocks covered with thin film of mud, above high tide line, in back of YWCA COLLECTIONS: Gilbert 9380, in canal on camp, Kaneohe Bay, Oahu, ( no date ); Doty River Street, near N imi tz Hi ghway, Honolulu, 17204, highest tidal rocks in pool at Coconut Oahu, April 7, 1959; 9386, on reef flat at Ala Island, H ila, Hawaii, Dec. 28, 1958; Bernato­ Moana Park, H onolulu, Oahu ,April 8, 1959; ioicz, A.]. ( no number ) , on stones where Ku­ 9548, on reef at Wailua, Kauai, April 25, 1959; liouou stream debouches into Maunalua Bay, 10065, attached to iron plates of tug boat, Kau­ Oahu, April 8, 1956. nakakai, Molokai, Ju ne 6, 1959. 8. V Iva expansa (Setchell ) Serchell and Gard ­ 11. Viva reticulata f. delicatula f. n. ner, 1920, p. 284. Fig. 1 This relatively commo n Viva is character ized Frons non affixa, in algis aliis implicata, seg­ by having broad unbranched thalli with ruffled mentis angustis reticulatisque, telis mulris par­ margins and in having the thalli thicker in the visque, frons ita delicata videtur; frons 32-36 p, middle than at the margins. Thalli of the Ha­ crass, cellulae in duobus stratis, 7-13 p, diam a waiian material reach 30 ern in width and 43 superficie visae, a sectione transversa visae fere cm in length, and range in thickness from 40­ rorundae, in matrice gelatinosa laxe disposirae. 70 p, near the margin and from 75- 100 p, in Gilbert 9947, TYPUS, e loco Kahaluu Park the center. Collections were made of attached ad Kailua, H awaii dicta, m. May 26, 19591ectus. 484 PACIFIC SCIENCE, Vol. XIX, October 1%5 both were relatively stiff and leathery, certainly different to the touch from other Ulva in the pile. The two fronds are ovate, about 11 em in length with a distinct but very short petiole. The fronds reach 137 I-'- in thickness. When seen in a cross section of the frond the cells are vertically elongated, up to 4 times their width in length, and the gelatinous matrix be­ tween and external to the cell layers is wide. COLLECTION: Gilbert 9188, .in wash at Naska, Maui, March 23, 1959. 13. Chaetomorpha antennina (Bory) Kiitzing, 1849,p. 379. This species commonly occurs where exposed to surf and actively moving water as in spill­ ways. Rather large quantities of material have been examined with particular reference to the 50/'- basal cell and considerable variation in basal cell size and degree of annulation have been FIG. 1. Ulva reticulata f. delicatula f. n. A , Habit sketch of small portion of frond; B, transverse section noted. For example, in plants which appear to of frond showing cell outlines. belong to the same clone ' (of Gilbert 9761) there are a few apparently mature plants with Frond entangled in other algae, apparently basal cells having no annulations, but in most unattached, its segments narrow and reticulate, plants the annulations are distinct and numer­ the meshes numerous and small, thus giving. ous. This species has been reported previously the frond a delicate appearance; frond 32-36 p, by several authors and only representative col­ thick, cells in tWO layers, 7 (10-11)-13 I-'- diam lections of my own are reported. in surface view, nearly round in cross sectional COLLECTIONS : Gilbert 9141, Kalama Park, view, loosely arranged in the gelatinous matrix. Maui, March 23, 1959; 9417, near Kahe Point, COLLECTION: Gilbert 9947, lYPE, Kahaluu Oahu, April 11, 1959; 9761, base of Na Pali Park, S of Kailua, Hawaii, May 26, 1959.
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