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IX, C1 Ames: Orchids of Guam 13 
lata. Sepalum dorsale oblongi-lanceolatum, acuminatum, acu- 
tum,1cmlongum. Petala ovato-lanceolata, subfalcata, 3-nervia, 
9 mm longa, circiter 3.5 mm lata. Labellum quadrilobum, ad 
apicem retusum, apiculatum, 7 mm longum, 12 mm latum. Ad 
basim labelli prope columnam callus bilobus. Calear scroti- 
forme, 2 mm longus. Columna 3 mm longa. 
R. C. McGregor 376, growing in thickets on hillsides at Piti, October, 
1911, flowers pale-green and yellow lined inside with wine-red. 
BULBOPHYLLUM Thouars 
BULBOPHYLLUM GUAMENSE sp. nov. 
Herba epiphytica. Pseudobulbi pyriformes, in sicco rugosi, 
circiter 2.5 cm longi, monophylli. Folium ellipticum vel oblon- 
gum, coriaceum, lamina 10 ad 15 cm longum, 2.6 ad 3.8 em latum. 
Scapi elongati, circiter 26 cm longi. Bracteae inflorescentiae 
deciduae, carinatae, cymbiformes, acutae, circiter 12 mm longae, 
quam pedicello longiores. Sepala lateralia triangulari-lanceo- 
lata, acuminata, acuta, carinata, circiter 1.5 mm longa, as basim 
5 mm lata, ad apicem cuspide munita. Sepalum dorsale lanceo- 
latum, 11 mm longum, ad apicem cuspide munitum. Petala 
minuta, 3 mm longa, 1.5 mm lata, 1-nervia, quadrata, quadri- 
dentata, ad apicem in caudam integerrimam abrupte attenuata. 
Labellum crassum, lanceolatum, 1 cm longum. Columna crassa, 
superne 2-alata, alis utrinque in brachium erectum, acutum, 
productis. 
R. C. McGregor 495, on trees, Upi road, October, 1911, flowers green; 
H. L. W. Costenoble 1176, September, 1906, common name cebello halumtano 
=wild onion; Guam Experiment Station 283, March, 1912, collected under 
the direction of J. B. Thompson. 
BULBOPHYLLUM PROFUSUM Ames in Philip. Journ. Sci. 7 (1912) Bot. 
128, 137. 
McGregor 565, Upi road, on tree trunks, flowers pale-green, October, 1911. 
Philippines. 
DENDROBIUM Swartz 
DENDROBIUM (§ DESMOTRICHUM) SCOPA Lindl. Bot. Reg. (1842) 
Misc. 55; Ames in Philip. Journ. Sci. 6 (1911) Bot. 52. 
Guam Experiment Station 307, February, 1912, epiphytic on tree trunks, 
- collected under the direction of J. B. Thompson, color of the flowers not 
noted, but in dried specimens pale-yellow. 
Dendrobium scopa Lindl. is a Philippine species closely related to D. 
angulatum Lindl. and D. comatum Lindl., from both of which it differs 
chiefly in the details of the labellum. It is also closely allied to D. calopogon 
Reichb. f. and D. Hasseltii Reichb. f. (Xen. Orch. t. 109 I & II), species which 
Kranzlin upholds but which J. J. Smith in “Die Orchideen von Jara” refers 
to the synonymy of D. angulatum Lindl. I have compared a flower of the 
