VI. PLANTS WRIGHTIAJJ.E. 19 



D. SPERGULOIDES, Gray, PL Fendl.p. 11. Stony hills, at the copper mines, New 

 Mexico ; Aug. and Oct. (867.) — The autumnal specimens, more branched, and 

 loaded with fruit, have the pedicels all erect. The seeds are nearly smooth. 



D. TENELLA, Gray, PL Fcndl. p. 12. Banks of mountain torrents, near the cop- 

 per mines. New Mexico ; Aug., in flower ; and on hill-sides under bushes, in fruit, 

 Oct. (868.) — The young specimens are depauperate, only two inches high, with 

 the spatulate-oblong or linear leaves 2 or 3 lines long. The later specimens are 3 

 or 4 inches high ; the principal length of the stem of one almost capillary inter- 

 node, which is often 2 inches long ; the leaves very narrow and 6 lines long. The 

 cyme effuse and many-flowered ; the central pedicels all much shorter than the 

 calyx. Capsule about the length of the calyx. Seeds very minutely roughened. 



D. EFFUSA (sp. nov.): annua, glaberrima, nisi internodiis supra medium glan- 

 dulosis viscosis ; caule filiformi superne ramoso in cymam patentissimam multifloram 

 diliquescente ; foliis anguste linearibus sessilibus imis spathulatis parvis ; pedicellis 

 bracteas ovatas scariosas vix excedentibus flore brevioribus ; sepalis ovatis obtusis 

 3-nerviis leviter scarioso-marginatis petalis alte bifidis (lobis oblongis) brevioribus 

 capsulam 3 - 4-spermam ada;quantibus ; seminibus lasviusculis. — Mountains east 

 of Santa Cruz, Sonora ; Sept. (869.) — Stems 3 to 5 inches high, with repeatedly 

 forked and spreading branches. Leaves much shorter than the inteniodes. Calyx 

 barely a line in length. Petals considerably exserted, and also larger and broader 

 than in D. tenella. Stamens 5. Ovary subsessile, .5 - 7-ovulate. — Distinguished 

 from the preceding by the viscous glandulosity of the upper half of all the inter- 

 nodes (except the very short pedicels), by the larger petals, &c. ; from D. nodosa, 

 Evgelm., which exhibits the first-named character, by the considerably smaller 

 flowers, with obtuse and not at all rigid sepals, which are no longer than the 

 capsule. 



Spergularia rubra, St. IliL ; Torr. Sf Gray, FL 1. p. 175; — diffuse or pros- 

 trate and small-flowered forms. Low banks of the Rio Grande at San Elizario; 

 June. (1324.) 



MoLLUGO verticillata, Liiin. Hills near the copper mines. New Mexico ; Aug. 



Paronychia Jamesii, Torr. Sf Gray, FL 1. p. 170; PL Wright, no. 21. p. 13. 

 Hills of the San Pedro ; May. On mountains near El Paso ; April. (870.) Also 

 on stony hills of the Pecos ; July ; — a slender and smoother variety, approaching 

 P. Lindheimeri, but with a ligneous perennial root. (1325.) 



P. Lindheimeri, Engclm. in PL Lindh. 2. p. 152. Hills of the Pecos; July. 

 (1326.) 



PORTULACACE.E. 



Sesuvium Portulaccastrum, Linn. var. floribus subsessilibus. (S. sessile, Pers.) 

 Low bottoms of the Rio Grande below El Paso. (871.) — Inner face of the sepals, 

 and the stamens, bright red. 



PoRTULACA lanceolata, Eiigehi. in PL Lindh. 2. p. 154. On the Rio Grande, 

 and west of the copper mines. New Mexico ; Aug. (872.) 



P. retusa, EngeJm. L c. 8f PL Wright, p. 13. Dona Ana, New Mexico; July. 

 — " Petals small, yellow, slightly emarginate." 



