732 SCROPHULARIACEAE 



1. Bacopa Eisenii (Kell.) Pennell. Western Hydranthele. Fig. 4631. 



Ranapaliis Eisenii KeU. Proc. Calif. Acad. 7 : 113. 1876. 

 Macuillamia Eisenii Pennell, Monog. Acad. Phila. 1: 57. 1935. 

 Bacopa Eisenii Pennell, Proc. Acad. Phila. 98: 96. 1946. 



Stem fleshy, much-branched, 2-3 dm. long or more, distally pubescent. Leaves cuneate- 

 obovate, rounded, 7-11-veined, becoming 1.5-2 cm. long; pedicels 10-50 mm. long,_ pubescent to 

 glabrate distally ; sepals &-7 mm. long, the outermost oval, green, and many-vemed, about 3 

 times the width of the oblong-lanceolate hyaline innermost ones ; corolla 9-10 mm. long ; styles 

 distinct near apex, the stigmas isolated ; capsule 4-5 mm. long. 



Pools, Lower Sonoran Zone; San Joaquin Valley of central California, and also in Nevada. Type locality: 

 Fresno, California. Summer. 



7. LIMOSELLA [Lindern] L. Sp. PI. 631. 1753. 



Acaulescent perennial glabrous herbs, the leaf-blades long-petioled, entire, and pal- 

 mately veined, and the flowers solitary on long pedicels. Bracteoles none. Sepals united 

 half their length, distally ovate and acute. Corolla nearly rotate, the lobes 5, white or 

 pinkish-tinged, acute. Stamens 4, nearly equal; anther-cells wholly confluent. Stigmas 

 united and capitate. Capsule septicidal, distally 1-celled, the septum not extending through- 

 out. [Name Latin, meaning mud and seat.] 



About 15 species, widely distributed. Type species: Limosella aquatica L. 



Style 2-0 4 mm. long, usually sharply decurved at base; corolla-lobes acute, dull white or pinkish; capsule 

 obovoid to ellipsoid; leaf-blades elliptic or oval, 2-8 mm. wide. 1. L. aquatica. 



Style 0.5-1 mm. long, straight or arcuately curved; corolla-lobes rounded, white or violet-tinged; capsule glo- 

 bose-ellipsoid; leaf-blades narrower, 0.5-2 mm. wide. 2. L. acauUs. 



1. Limosella aquatica L. Northern Mudwort. Fig. 4632. 



Limosella aquatica L. Sp. PI. 631. 1753. 



Plants densely floriferous, each usually surrounded by a group of secondary plantlets on 

 stolons. Leaf -blades oblong to elliptic, 1-1.5 cm. long, abruptly or cuneately narrowed to 

 petioles usually 2 to 4 times the length of the blades ; pedicels less than or about half the length 

 of the petioles; capsule 3 mm. long. 



Muddy shores of streams or ponds. Upper Sonoran and Transition Zones; southern British Columbia to 

 south central California, eastward to Minnesota and New Mexico, and at remote northern localities from Alaska 

 to Newfoundland, and in northern Eurasia. Type locality: northern Europe. May-Nov. 



2. Limosella acaulis Sesse & Moc. Southern Mudwort. Fig. 4633. 



Limosella acaulis Sesse & Moc. Fl. Mex. 156. 1895. 



Plants more cespitose, so massed as to obscure the stolons. Leaf-blades linear-oblanceolate, 

 0.6-1.2 cm. long, attenuate to petioles usually several times the length of the blades; pedicels 

 mostly about the length of the petioles ; capsule 3 mm. long. 



Shores of lakes or ponds, Transition Zones; coastal California to southern New Mexico, southward to 

 Lower California and the Mexican plateau. Type locality: San Felipe del Obraje, Mexico. May-Nov. 



8. VERBAsCUM [Bauhin] L. Sp. PI. 177. 1753. 



Erect simple or virgately branched herbs, from perennial or biennial roots, the cauline 

 leaves alternate, sessile, clasping or somewhat decurrent, and the flowers in racernes or 

 crowded spikes. Bracteoles none. Sepals 5, distinct, uniform. Corolla rotate, slightly 

 zygomorphic, yellow (or occasionally white), the lower lobes slightly the longer. Stamens 

 5, the filaments villose-pubescent, alike or the lower pair different from the others. Stig- 

 mas united and capitate. Capsule ellipsoid to subglobose, septicidal. Seeds numerous, 

 wingless. [The Latin name of the great mullein.] 



About 250 species, natives of Eurasia. Type species: Verbascum Thapstis L. 



Plants with simple gland-bearing hairs; leaf-blades sinuately dentate or denticulate, slightly or not pubescent; 

 filaments all densely villose with purple knobbed hairs; capsule subglobose. 

 Pedicels 10-15 mm. long; capsule glandular-puberulent; leaf -blades sinuately dentate, glabrous; plant bear- 

 ing only simple glandular hairs. 1- ^- Blattaria. 

 Pedicels 3-5 mm. long; capsule pubescent with stellate glandless as well as simple glandular hairs; leaf- 

 blades sinuately denticulate, pubescent; plant bearing very short glandular hairs, that are often ex- 

 ceeded by simple or stellate glandless hairs. 2. V. virgatum. 

 Plants only with stellately branched glandless hairs; leaf -blades entire, tomentose; pedicels less than 10 mm. 

 long; three upper filaments strongly villose, the two lower less so and with filiform yellow hairs; 

 capsule ovoid or cylindric. 

 Capsule 4-6 mm. long; lower filaments villose, their anthers not decurrent; fascicles 5-9-flowered, the 

 primary pedicels longer than the capsules; inflorescence much-branched, the fascicles disjunct; leaves 

 not decurrent, the blades closely tomentose. 3. V. speciosum. 

 Capsule 8-10 mm. long; lower filaments nearly glabrous, their anthers decurrent at base; fascicles few- 

 flowered, the pedicels very short or suppressed; inflorescence simple, the fascicles confluent and 

 densely crowded; leaves conspicuously decurrent, the blades with larger and looser hairs. 



4. V. Thapsus. 



