181 



Poa annua Linn. Sp. PI. (J753) (iS; F.-Vill. Nov. App. (1883) :i22. 



Luzon, Province of Benguet, Bued River (4288 Merrill) November 14, 1905, 

 altitude 1,200 in. 



This species was reported from the Philippines by F.-Villar, who states that 

 lie saw living specimens in Luzon and Panay. I have never seen specimens of 

 this grass from regions at low elevations in the Philippines, and it is possible 

 that F.-Villar's record was based on an erroneous identification. Poa annua was 

 found along the new Benguet road near some of the construction camps, the 

 seeds undoubtedly having been introduced in American hay. used for food for 

 the horses and mules utilized in the construction work. It was well established, 

 and will undoubtedly persist. 



Among other weedy plants collected on the same trip which were certainly 

 introduced by the same means are Trifolium pratense Linn., T. repens Linn., 

 Oehutium vulyatum Linn.. Spergula arrensis Linn., Rum ex ace lose] la Linn., and 

 Riimex erispus Linn. All of these plants were found in cultivated places or in 

 waste lands near construction camps, and some of them will undoubtedly persist. 

 With the exception of Riimex acctosclla Linn., none of the above species have 

 previously been reported from the Philippines. Trifolium pratense Linn., has also 

 been collected in Mindanao, Camp Keithley (Mrs. Clemens), April, 1006. 



FLAGELLARIACEiE. 



JOINVILLEA Oaudich. 



Joinvillea malayana Ridley, Journ. Straights Branch Roy. As. Soc. 44 (1005) 



10!). 



Palawan. Balsa jan River (575 Foxwortlty) March 'A, 1000. In clcajings in 

 forests at an altitude of about 050 m. Malayan Peninsula and Borneo. 



No species of this small genus has previously been discovered in the Philip- 

 pines, the above specimen agreeing perfectly with authentic material of Joinvillea 

 malayana in the Herbarium of this Bureau, received from the Botanic Garden, 

 Singapore, collected at Perak. The species was described from material collected 

 in Perak and Selangor, Malayan Peninsula, and Mount Matang. Sarawak, British 

 North Borneo. 



As noted by Ridley, this form is most closely related to one of the Hawaiian 

 species, there being two of the genus known from Hawaii, and one from New 

 Caledonia. For parallel distribution Ridley cites only the genus Cyrtandru of 

 the Gesneriacea-, which reaches its maximum development in the Sandwich 

 Islands, extending to the Malayan Archipelago and Peninsula. For the Philip- 

 pines a parallel case of distribution is represented by Tetraplasandra philip- 

 pinensis Mer. of the Araliacew (see p. 210). In this very characteristic genus. 

 one species is known from the Island of Palawan in the Philippines, one from New 

 Guinea, one from Celebes, and six from the Hawaiian Islands. Another case is 

 represented by the genus Hchistostcgc Hillebr., of the Polypodiaccar, of its three 

 known species, one being from Hawaii and two from the Island of Mindanao, 

 southern Philippines. 8 Rolfe cites Asplcnium pcrsicifolium J. Sin., as being 

 confined to the Philippines and Hawaii, but this species is apparently endemic 

 in the Philippines, as Hillebrand 10 considers the Hawaiian form distinct from 

 A. pcrsicifolium. 



' Copeland: Philip. Journ. Sci. 1 (1906), Suppl. 155. 

 "Rolfe: Journ. Linn. Roc. Bot. 21 (1884), :507. 

 10 Hillebrand: Fl. Hawaiian /si. (1888), 501. 



