Urticaceae. 



On the island of Kauai, on the leeward side in the forest of Kaholuamano, 



grows a small tree about 18 feet high, which differs very materially from Vrera 



sandvicensis, found on Hawaii. It is here described as a new variety under the 



name Vrera sandvicensis var. Kauaiensis. The native name of this tree is Hona. 



Var. Kauaiensis var. nov. 



Hona. 



Leaves broadly ovate, bluntly accuminate at the apex, truncate to euneate at the 

 base, evenly orenate to serrate, thick coriaceous, dark green, with bright red midrib 

 and veins, pinnately nerved, glabrous on both sides, 6 to 9 cm wide and 10 to 14 cm long, 

 on petioles of 4 to 12 cm; male flowers bright red, perigone tuberculate, stamens purple 

 to pink, 5 in number, inflorescence in the axils of the upper leaves and all along the naked 

 branch, very shortly peduncled, branching cymosely or paniculate, flowers larger than 

 in the species. 



The tree, which is called Hona by the natives, was the only one observed in the 

 forests of Kaholuamano, Kauai, along a streambed. It was collected by the 

 writer in August, 1909, and October, 1911. The number of the type is 9006 in 

 the College of Hawaii Herbarium. It differs from the species in its very long 

 petioled coriaceous leaves, shortly peduncled male inflorescence, which is of a 

 bright red color, purple anthers and large perigones. 



Mention may be made here of Vrera Kaalae Wawra, a small tree found in the 



Waianae range of Oahu. It differs from V. Sandvicensis in the palmately 



nerved, cordate leaves, small triangular stipules and braeteolate inflorescence. 



The plant was discovered by Wawra and described in Flora (1874), p. 542. His 



specimens came from Mt. Puakea of the Kaala range. Not collected by the 



writer. 



PIPTURUS Wedd. 



{Nothocnide Blume.) 



Perigone of the male flower with 4 to 5 ovate lobes. Perigone of the female flower 

 thin and fleshy with the mature fruits. Embryo with scanty albumen and broad cotyledons. 

 Trees and shrubs with alternate 3 to 5 nerved leaves, which are usually covered with a 

 gray pubescence underneath, entire to serrate leaves; stipules bifid, easily caducous. 

 Flower clusters globose, single in the leaf axils, or in some plants, not from the Ha- 

 waiian Islands, arranged in catkins. 



The genus Pipturus consists of about 12 species, which are distributed over 



the Oceanic Islands, Hawaiian Islands, and Mascarene Islands to Australia. The 



Hawaiian species are all called Mamaki or Mamake; they furnished, next to 



Wauke {Brousonetia papyrifera) , the fiber for their tapa or paper cloth. 



Pipturus albidus A. Gray. 



Mamaki or Mamake. 



(Plate 41.) 



PIPTUEUS ALBIDUS A. Gray (ined.) in H. Mann, Proc. Am. Acad. VII (1867) 201;— 

 "Weddl. in DC. Prodr. XVI (1869) Sect. I. 23517;— Nadeaud, Enum, (1873) n. 

 313;— Wawra in Flora (1874) 547;— Hbd. Fl. Haw. Isl. (1888) 413;— Del 

 Cast. 111. Fl. Ins. Mar. Pac. VII (1892) 303, et Fl. Polyn. Franc. (1893) 203; — 

 Heller PI. Haw. Isl. (1897) 814.— Boehmeria albida Hook, et Arn. Bot. Beech. 

 (1832) 96;— Endl. Fl. Suds. (1836) no. 866.— Pipturus tahitensis Wedd. in Ann. 

 Sc. Nat. ser. 4. I (1854) 197, «t Pipturus Gaudichaudianus Wedd. 1. c. p. 196.— 

 Perlarius albidus 0. Ktze. Eev. Gen. PI. II (1891) 630. 



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