18 



PLA3ST.E TVRIGHTIAN^. 



VI 



Arenaria dtffusa, EIL Sk. 1. p 



A. nemorosa, H. B. IL Nov. Gen. Sf Sp 



i.p 



Spergulastrum lanuginosum, Michx^ Stellaria elongata, Nutt. S 



ginosa, Torr. §• Gray, FL 1. p. 187 ; Grai/, PL FeiidL p. 13. Hill 

 per mines, New Mexico ; and near Santa Cruz, Sonora. (864.) 

 Arenaria, as the genus is characterized by Fenzl. The petals, which 



the cop- 



This 



some of these specimens 

 extdnds southward to th 



ire entire, and nearly as long as the calyx. This species 

 Quitensian and the Peruvian Andes. The testa of the 



seed is very smooth and shining. In the nearly allied A. Benthamii, which Mr. 



Wright formerly gathered in Texas, the testa is tuberculate. 



A. SAXosA (sp. nov.) : multiceps e radice perenni; caulibus subsimplicibus erectis 



S-poUicaribus) foliosissimis puberuHs ; fohis oblongo-lanceolatis acutato-mu- 



cronatis uninerviis glabriusculis subcarnosis ; pedunculis folia sequantibus ; sepalis 



ovato-oblongis acutis margine scariosis carinato-uninerviis petalis brevioribus. 



Stony hills at the copper mines, New Mexico ; Atig. (865.) — Stems very numerous 



and tufted, erect, or somewhat spreading, very leafy, 1-5-flowered. Leaves 2 or 3 



lines long, crowded, longer than the internodes, minutely scabrous-puberulent, 



scarcely ciliolate, thickish, rather strongly one-nerved. Peduncles simple, 2 - 4-lines 



Sepals about 2 Hnes long, a little shorter than the obovate-oblong white petals. 



Staraens 10 : filaments glabrous. Styles 3. Ovary globose-ovoid, about 40-ovulate. 



Capsule rather longer than the calyx, 3-valved at the apex ; the valves soon 2-cleft. 



Seeds rather numerous, smooth, not strophiolate. — The plant I named Mcehringia 



umbrosa in PL FendL p. 13, is probably a form of the present species, with a looser 



inode of growth, and with much longer and smoother leaves. I have no fruit of 



that plant. The present plant has estrophiolate seeds, and therefore cannot be a 

 Moehringia. 



Cerastium yulgatum, Linn. ; Fenzl in Ledeb. FL Eoss. 1. p. 408. C. triviale, 



long. 



Auct Ravines, on the Organ Moimtains, 'New Mexico, April. 



(1323.) 



Dry3iaria glandulosa, Bartl in Presl, Rel. Hank. 2. p. 9. D. ramosissima, 

 ScJdecht. in Linnaa, 12. p. 206 ? D. cordata ? Grai/, Pl. Fendl. p. 13. New Mexico 

 near the copper mines ; Aug. and Oct. (866.) — Distinguished from D. cordata by 

 the viscid-glandular pubescence of the branches, pedicels, and calyx ; the more 

 glomerate flowers ; and the longer, sharply acuminate sepals. The specimens stick 

 to the paper in which they were dried. The stamens are only ,3.* 



V 



* 



No. 722 of Coulter'3 Mexican collection can hardly be separated with propriety from this genus, al- 

 though it has entire petalg and axillary flowers.^ It may be characterized as follows : — 



Drymaria xeeofhylla (sp. nov.) : glabra ; caulibus decumbentibus ramisque floridis foliosis ; foliis 

 subsessilibus ovatis cuspidato-acuminatis chartaceo-membranaceis siccis 3 - 5-plincrviis venosis ; stipulis 

 ■plurlsetosis ; cymulis axillaribus 1 - 5-floris subsessilibus folia haud superantlbus ; sepalis oblongis obtusis 

 3-nerviis ; petalis minimis spathulatis integris ; ovario 3-ovuIato. — The petals, which are not half the 

 length of the sepals, are quite entire, or barely emarginate, or rarcly one or two of them 2-lobed at the 

 apex ; they appear to be hypogynous. The stamens are only 3, with their filaments dilatcd at the base 

 and connate mto a rlng. Capsulo three-valved, one-seeded ; the secd smooth. Embryo as in the genus. 



Leaves 3 to 5 lines in length. 



D. polycarpoldes, Fl. Fendl l c, is, I bellever, not distinct from D. crasslfolia, Bejith. Bot. Voy. Sulph., 

 which 18 the species inadvertently referred to undcr the namc of D. glauca. 



t 





