. Dansk botanisk arkiv. Plants; Plants -- Denmark. 30 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. often two opposite branchlets (Fig. 21). In the lowest part of the plant these branchlets consist of 2â3, rarely more cells, higher up of two, then of a single one only; at the top some few sessile sporangia may occur. The cells in the branchlets are about S/x broad and S/j. long. The sporangia are ovate about 7âSju broad and 8â10 ft long. This species has been found at the very exposed coast at Northside, St. Croix. 7. Acrochætium Sancti Thomæ nov. spec. Thallus sine pilis usque ad 200â300/^ altus. Dis
. Dansk botanisk arkiv. Plants; Plants -- Denmark. 30 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. often two opposite branchlets (Fig. 21). In the lowest part of the plant these branchlets consist of 2â3, rarely more cells, higher up of two, then of a single one only; at the top some few sessile sporangia may occur. The cells in the branchlets are about S/x broad and S/j. long. The sporangia are ovate about 7âSju broad and 8â10 ft long. This species has been found at the very exposed coast at Northside, St. Croix. 7. Acrochætium Sancti Thomæ nov. spec. Thallus sine pilis usque ad 200â300/^ altus. Discus basalis unistratus, e fdis re- pentibus plus minus lateraliter confluenti- bus, compositus. Fila erecta sim- plicia aut parce ra- mosa, e cellulis 8â 9// latis et 16â18// longis composita. Chromatophorum parietale, pyrenoide, ut videtur, centrali instructum. Pili longi hyalini, initio terminales, po- stea pseudolaterales, adsunt. Monosporangia plerumque sessilia et uniseriata, interdum pedicellata et oppo- sita, solitaria vel bina in uno articulo, ob- ovata, 7 // lata et 10 fj. longa. This plant was found together with oo ^ , ⢠c^ â several other species Fig. 2ö. Acrochætium Sancti I homæ nov. spec. i i i e a, b, c, three parts of different tufts showing upon old leaves ot sporangia-bearing filaments, d, e, bases of Sargassum vulgare plants, f, basal filaments seen from above. p ⢠n . p. (a, about250:l,fc,c,e, 130:1,/â¢, 250:1, rf, 500:1). formmg small Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dansk botanisk forening. Kbenhavn : Dansk botanisk forening
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Keywords: ., bookcentury1900, bookcollectio, bookdecade1910, booksubjectplants
