ROBINSON AND FKRNALD. — MEXICAN PLANTS. 121 



weak, loosely mattotl, decumbent, much branched, rooting at the johits, 

 3-6 inches in length : leaves small, suborbicular, broader than long, 

 shallowly sinuate-dentate, cartilaginous margined ; the largest 3 lines 

 in diameter, abruptly contracted into a short winged petiole : pedicels 

 axillary, opposite, filiform, 9-12 lines long: calyx in authesis 2^ lines 

 in length, slightly accrescent and loosely surrounding the fruit: corolla 

 yellow, spotted with purple ; lobes fringe-toothed ; the median lobe of 

 the lower lip somewhat retuse : anther cells not confluent: capsule 

 compressed, obtusish, 1] lines in length. — Collected at Nacory, 

 Sonora, at 3,750 feet, by Mr. Hartman, 4 December, 1890 (no. 288) ; 

 and on the Bavispe River, Sonora, by Mr. Lloyd, 23 December, 1890 

 (no. 440). Habit of M. Madrensis, Seem., but with fringed corolla. 



Salvia rubropunctata. SufFrutescent : stems branched, gray- 

 ish; branches brown, slightly scabrous, pulverulent: leaves ovate- 

 oblong, obtuse or rounded at the apex, abruptly contracted to a cu- 

 neate base, finely crenate-serrate, punctate with dark red dots, at first 

 strongly rugose above and white-tomentose beneath, becoming nearly 

 smooth and glabrous; the largest IJ inches long, half as broad; many 

 smaller ones clustered in their axils : spikes subcapitate, terminal, soli- 

 tary, or 2-3 together, short-peduncled ; floral leaves lanceolate, slightly 

 exceeding the calyx ; verticels about 6-flowered, approximate : calyx 

 2^ lines long, covered with dense bluish wool, obscuring numerous 

 bright scarlet glandular dots ; the upper lip shortly 3-toothed ; 

 teeth acuminate : corolla blue, 6 lines in length, punctate with red 

 glands ; the lower lip about equalling the tube ; the upper lanate on 

 the outer surface. — Collected in the Canon Huehuerachi, Sonora, by 

 Mr. Lloyd, 12 December, 1890 (no. 451). The species appears to 

 belong to § Erianthoe. It is noteworthy for the bright red glands 

 which cover all parts of the flower, but are nearly or quite hidden by 

 the enveloping bluish wool. 



Arceuthobium sp. Staminate plant very robust, 6-7 inches long, 

 profusely branched : stem terete at the base, 5-6 lines in diame- 

 ter, sheaths short, campanulate, truncate ; branches more or less 

 sharply quadrangular, bright yellow : spikes very numerous, short, 

 few-flowered : flowers 3-4-parted ; segments obtuse, ovate-oblong, 

 arched over the stamens ; the latter inserted near the middle of the 

 segments. — Collected on pines at Pine Ridge Pass, Sonora, at 3,200 

 feet, by Mr. Hartman, 17 December, 1890 (no. 340). This interest- 

 ing plant may be the staminate form of A. robustum^ Engelm., or of 

 A. campylopodium, var. (?) /3, Engelm. From the specimens of both 

 species at hand the present plant differs in its considerably greater 



