19141 
GREENMAN AND THOMPSON—FLOWERING PLANTS 409 
In habit and in the structure of the flower it possesses certain 
characters in common with Mappia, Kummeria and Poraqueiba, 
but in a combination of the floral characters, particularly in the 
free or merely coherent glabrous and strongly ribbed petals, 
the broad smooth filaments, elongated anthers, which in cross 
section are distinctly x-shaped, and in the single suspended 
ovule the plant in question differs from the genera above men- 
tioned. Generic rank is therefore given to it and we propose 
the name Oecopetalum, from oikos house and zéradoy petal, in 
reference to the little recesses or pockets formed by the adjacent 
petals in which the anthers rest. 
Stemodia linearifolia (Morong) Greenman & Thompson, 
comb. nov. 
Stemodiacra linearifolia Morong, Ann. N. Y. Acad. Sci. 7:183. 
1893. 
Stemodia tomentosa (Mill. Greenman & Thompson, comb. 
nov. 
Erinus tomentosus Mill. Dict. 1768. [8th ed.]— Herpestes 
tomentosa Schlecht. & Cham. Linnea 5: 106. 1830.—Stemodia 
lanata Ruiz & Pav. in DC. Prodr. то: 383. 1846; Hemsl. Biol. - 
Cent.-Am. Bot. 2:450. 1882.—Stemodiacra tomentosa О. Kuntze, 
Rev. Gen. 2: 466. 1891. 
Siphonoglossa Greggii Greenman & Thompson, sp. nov. 
Suffruticosa; caulibus erectis vel adscendentibus 0.5-2 dm. 
longis subcylindratis et sepe quadrisulcatis pubescentibus in 
lineis decussatis cum pilis reflexis; foliis oppositis brevipetio- 
latis lanceolatis vel obovatis 0.5-2.5 em. longis 3-7 mm. latis 
acutis vel obtusis vel rotundatis integris basi in petiolum grada- 
tim angustatis supra glabris subtus paulo pallidioribus juventate 
secundum nervos venasque adpresso-puberulentis; floribus in 
axillis supernis solitariis sessilibusque, bracteis subspathulatis; 
calyce profunde 5-partito 4 mm. longo, laciniis lineari-lanceolatis 
glabris; corolla 1.5-2 cm. longa bilabiata, labio anteriore horizon- 
taliter patenti trilobulato, labio posteriore suberecto emarginato, 
tubo gracili 9-14 mm. longo extus pubescenti; ovario et stylo 
glabro; capsula circiter 7 mm. longa glabra, seminibus suborbic- 
ularibus compressis verrucosis circiter 2 mm. diametro. 
Specimens examined: 
Mexico: State of Tamaulipas, Matamoras, 7 June, 1847, Dr. J. 
