ix, c, i Merrill: Plants of Guam 77 
late-acuminate, about 2 mm long, 1 mm wide. Anthers 4, about 
1 mm long. Rudimentary style none. 
Guam, Experiment Station 159, November, 1911, river bank at Tolijuice, 
locally known as tepon agugu. 
A species well characterized by its rather slender, simple, erect, stems, 
and its small, relatively very narrow, lanceolate leaves which are sub- 
equally narrowed at both ends, acute or obtuse, not acuminate, slightly 
inequilateral at the base. 
ELATOSTEMA CALCAREUM sp. nov. 
Erectum, glabrum, simplex, usque ad 60 m altus; foliis al- 
ternis, sessilibus vel brevissime petiolatis, membranaceis, nitidis, 
usque ad 15 cm longis, inaequilateraliter oblongis, leviter fal- 
catis, basis uno latere acutis, altero auriculato-rotundatis, apice 
sensim plus minusve obscure acuminatis ; inflorescentiis $ 
axillaribus, solitariis, depresso-globosis, 5 ad 7 mm diametro, 
subsessilibus vel breviter pedunculatis ; floribus 4-meris, brac- 
teolis obtusis. 
Apparently erect, somewhat fleshy when fresh, the stems 
simple, unbranched, up to 60 cm high, the basal part somewhat 
decumbent. Leaves alternate, distinctly inequilateral, sub- 
falcate, oblong, membranaceous, green and shining when dry, 
10 to 15 cm long, 3 to 4 cm wide, the apex gradually and not 
at all prominently acuminate or merely acute, the base strongly 
inequilateral, one side acute, the other rounded-auriculate, the 
lobe about 5 mm wide, prominently 3-plinerved, the nerves reach- 
ing the apex or nearly so, anastomosing with the distant, few, 
lateral ones, both surfaces with numerous cystoliths, the lower 
surface somewhat paler then the upper; petioles very short or 
none; stipules linear-lanceolate, acuminate, about 5 mm long. 
Staminate heads axillary, solitary, depressed-globose, 5 to 7 mm 
in diameter, many-flowered, the peduncles 1.5 mm long or less, 
the heads sometimes sessile or subsessile ; involucral bracts green, 
broadly ovate, mostly acute, 3 to 4 mm long. Bracteoles at least 
5 subtending each flower, very narrowly oblong, obovate, obtuse 
or truncate, not spurred, minutely ciliate at their apices, about 
3 mm long, 0.8 mm wide, the inner ones thinner than the outer. 
Flowers (buds only) 4-merous, the calyx-lobes membranaceous, 
elliptic, obtuse or very obscurely and shortly apiculate, 2 mm 
long. 
R. C. McGregor U32, on damp limestone cliffs near the sea at Madqui, 
October, 1911. 
Well characterized by its simple erect stems, its alternate, fairly ample, 
shining, inequilaterally-oblong, slightly acuminate leaves which are prom- 
inently inequilateral at' the base. 
