COLLECTED IN DUTCH NEW GUINEA. 245 



Anfhem pallide citrina, linearis, 2 mm. longa, apiculo miuuto rubro. ? : Gluma 

 ut in 6 ; stylo tenui purpureo, 4 mm. lougo. Caryopsis 8 mm. longa, 4 mm. 

 crassa, ovoidea, medio dilatata, basi obconica, angustata, apice acuta, ocrea, nitida 

 in medio multi costata. — Ab aliis speciebus differt foliis involucralibus 6-8 elongatis 

 planis lanceolatis linearibus. 

 Canoe Camp, 700 ft. 



The genus Chorizandra comprises two species, natives of Australia and New Caledonia. 

 These are wiry xerophytic plants, with a few terete leaves at the base, or leafless, 

 the involucre consisting of one or two terete acute, erect, foliar organs. The plant above 

 described differs conspicuously in having a false whorl of broad leaf-like organs sur- 

 rounding tbe solitary head. The stems are borne singly on a fairly stout woody rhizome, 

 and at the base are enclosed in a mass of brown sheaths. They are l-angled, an unusual 

 thing in Cyperaceae. The head of flowers is half hidden in the bases of the involucral 

 leaves, and consists of a compact mass of spikelets with stiff, cuspidate, blackish-brown 

 bracts at the base. The sj)ikelets are composed of a mass of glumes, the outer ones 

 broad, acutely keeled, narrowed and flat in the lower part, the upper ones gradually 

 passing into lanceolate nearly flat pale glumes tipped with reddish brown. In each of 

 these there is a single stamen, except the terminal one, which bears a pistil. In Bentham 

 and Hooker's ' Genera Plantarum' (iii. 1057), the description of the spikelets is given as 

 "Spiculte multiflorse, floribus omnibus hermaphroditis (vel apud auctores nonnullos 

 in capitulo androgyno numerosae 1-flone uni-sexuales)." 1 do not think there is any 

 doubt as to the structure of the spikelet ; at the base are two or three empty glumes, 

 or bracts, of a somewhat peculiar shape, broad, oblong, spathulate-hooded, and stiff ; 

 the rest (very numerous) are simply lanceolate, and each subtends and slightly curves 

 round a single stamen, representing a monandrous flower, except the terminal one, 

 which half encloses tbe pistil, representing a monogynous flower. 



Suringar {I. c.) describes and figures what is evidently intended for this plant, under 

 the name Capitularia involucrata (nov. gen. et sp.). His specimen seems to have been 

 a poor one, and his account of the inflorescence is not very clear, as he seems to have 

 misunderstood the structure of the spike. However, his figure of the whole plant is 

 sufiiciently clear to identify it ; it w^as obtained at Alkmaar by Versteeg. 



The genus Chorizandra, with the African Chrysothrix and the Asiatic Leiyironia and 

 Scirpodendron, seem to me to form a somewhat natural group, each spike possessing a 

 number of monandrous flowers with one terminal female flower. 



Mapania macrocephala, K. Schum. in Engl. Bot. Jahrb. xiii. (1891) 265. 

 Camp VI a, 3500 ft. 

 Distrib. Endemic in New Guinea. 



Mapania radulosa, Ridl., sp. nov. 



Folia linearia, longe acuminata, 90 cm. longa, 1-15 cm. lata, coriacea, marginibus et 

 costis spiculosis aculeis minutis. Scapi graciles, spinulosi, obtuse triquetri, 70 cm. 



