238 New Species of Mexican Plants. [ZOE 
lobes nearly equal in length, 4 mm. long; the 4 1-celled anthers 
nearly sessile: capsule oblong, without stipe, 4-seeded. 
Collected on the mesa at El Riego, near Tehuacan, Puebla. 
No. 1238. . 
Plantago Purpusi. Perennial czespitose, glabrous: leaves 
leathery, narrowly ovate, attenuate to an obtuse tip and to a 
margined petiole, more or less crenate or crenate-dentate, 3-4 mm. 
wide, 1.5-3 cm. long including the petiole: bract spathaceous en- 
tirely enclosing the 4-parted calyx of the solitary flower: corolla 
tubular, 1 cm. long, twice the length of the calyx, shortly 4-lobed: 
anthers 4, dorsifixed, much exceeding the corolla, 2-celled, the 
cells converging to a pointed apex: ovary superior, 2-celled, 6 
ovuled, ovules ventrally affixed: stipe of the ovary 2 mm. long, 
becoming 2 cm. long when in fruit: capsule circumscissile near 
the middle: seeds brown, somewhat irregularly quadrilateral and 
flattened, peltate; albumen fleshy; embryo relatively large, ob- 
long-ovate, the radical short. 
This interesting plantain belongs to the § Plantaginella and is 
related to the one-flowered Andean species of South America. 
Collected in wet meadows along brooks and glaciers on Ixtacci- 
huatl. No. 1840. 
Houstonia gracilis. Herbaceous, perennial by filiform root- 
Stocks; stems erect, 1 5-20 cm. high, sparingly branched, glab- 
rous: lower leaves ovate, about 6 mm. long, 5 mm. wide and 
less; upper leaves linear-oblanceate, mucronate, inclined to be 
revolute, slightly pubescent; stipules minute, setiform: inflores- 
cence terminating the stems or axillary in few flowered cymes; 
peduncles 5-8 mm. long; pedicels 3-5 mm. long; calyx divisions 
I mm. long, lanceolate; corolla funnel form, 4 mm. long; tube 
pubescent within; capsule subdidymous, broader than long, nar- 
rowed below, 1.5 mm. long, four-fifths inferior; seeds nearly flat, 
minutely scrobiculate. 
Possibly this is the WH. cerulea of Biolog. Cent. Am. from 
the same region. Collected near Orizaba, growing on rocks. 
No, 1251. 
Flourensia ilicifolia. Shrubby, 1.5 m. high, the brown pu- 
berulent stems branched: leaves alternate, glabrous, ovate, spin- 
ee ee ay 
