130 



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An Orchid in mountain districts of the middle part of Japan. It is 

 figured under the name of Kinsei-ran in Iinuma's Somoku-Dzusetsu, Vol. 

 XVIII. 



Scolopendrium (Antigramma) Ikenoi Makino sp. nov. 



Rhizome short, repent, flexuous, often branched, with more or less 

 copious roots. Stipes rather approximate, usually longer or sometimes 

 shorter than the frond, slender, flaccid, glabrous, but more or less fibrillose 

 with brown hairs at the base, shining, chestnut-coloured, the longest one 

 about 12 cm. Frond ovate-lanceolate, more often narrowed towards the 

 obtuse apex, auriculate at the base with broadly rounded lobes and a close 

 sinus, obscurely repand on the margin, 3-9 cm. long, 1 J- nearly 3 J cm. 

 broad, thin, herbaceous, nearly glabrous ; midrib slender, the lower portion 

 thinly fibrillose and chestnut-coloured beneath ; veins moderately close-placed, 

 erect-patent, but the* basal ones horizontally patent and those in the basal 

 bobes of the frond deflexed, bifurcate near the base, more or less anasto- 

 mosing mixed with free venules towards the margin. Sori linear, erect- 

 patent but more patent in the lower ones, situated along the superior 

 branch and sometimes the inferior branch of dichotomous veins arranging 

 between the midrib and margin nearer the former than the latter, rather 

 loosely placed one another, usually very slightly arcuate or sometimes 

 straight, 3-13 mm. long ; indusium similar to the sorus in the form and 

 size, more or less firmly membranaceous, entire ; sporangium long pedicel- 

 late ; spore elliptical, muricated, brown. 



Norn. Jap. Hime-taniwatari (T. Makino nom. nov.). 



Bab. Ogasawara (Bonin) Archipelago : Exposed rocks of Promon- 

 tory Sekimon-zan in Isl. Haha-zima (S. Ikeno ! herb. Agric. Coll. Imp. 

 Univ. Tokyo, Aug. 8, 1899). 



This little Fern is "one of the section Antigramma, and it is more or 

 less interesting that it was collected in the island where no Scolopendrium 

 has hitherto been known to grow. Oppositely paired sorus which is an 

 essential character of the genus, occur in a small number amongst many 

 Asplenoid sori on my specimens. The frond often bears only the Asplen- 

 oid sori, and in such a state the plant may be wrongly referred to Asple- 

 nium. I have named the species in memory of Professor S. Ikeno, who 

 was on his botanical tour to the Archipelago in this year. 



(To be continued.) 



