198 



SCROPHULARIACEAE. 



VOL. III. 



i. Limosella aquatica L. Mudweed. Mudwort. Fig. 3793. 



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

 Limosella tenuifolia Hoffm. Deutsch. Fl. 29. 



1804. 

 Limosella australis R. Br. Prodr. Fl. Nov. Holl. 



i : 443. 1810. 



Leaves i'-5' long, the blade oblong, linear- 

 oblong, narrowly linear or spatulate, ob- 

 tuse, one-fourth or one-third as long as 

 the filiform petiole. Peduncles shorter than 

 the leaves, arising with the petioles from 

 the base of the plant or from nodes of the 

 creeping or floating stem; corolla pink or 

 white, about i" broad, scarcely longer than 

 the calyx; calyx-lobes ovate, acute or acut- 

 ish, about the length of the tube; stamens 

 inserted high up on the corolla-tube ; fila- 

 ments somewhat longer than the anthers; 

 capsule globose or oblong-globose, obtuse, 

 \\" high, longer than the calyx. 



On muddy shores and in brooks, Labrador 

 and. Hudson Bay to the Northwest Territory, 

 south to New Jersey, and in the Rocky Moun- 

 tains to Colorado, and in the Sierra Nevada to 

 California. Also in Europe, Australia and 

 South America. June-Aug. 



22. SYNTHYRIS Benth. in DC. Prodr. 10: 454. 1846. 



Perennial herbs, with thick rootstocks, simple erect stems, large petioled basal leaves, 

 those of the stem much smaller, alternate, sessile, or clasping, bract-like. Flowers small, pink 

 or purple, in terminal dense elongated spikes or racemes. Calyx 4-5-parted, the segments 

 oblong or linear. Corolla oblong or campanulate, 2-4-lobed, or parted, or wanting, the lateral 

 lobes, when present, exterior in the bud. Stamens 2 (occasionally 4), posterior, inserted on 

 the corolla, or on the outer side of the hypogynous disk, exserted; filaments slender; anther- 

 sacs parallel or divergent, not confluent. Ovary 2-celled or rarely 3-celled; style filiform; 

 stigma capitate. Capsule compressed, obtuse, or emarginate, many-seeded, loculicidally dehis- 

 cent. Seeds flat, oval, or orbicular. [Greek, closed doors, referring to the capsule-valves.] 

 Our species were referred, in the first edition of this work, to the Old World genus Wulfenia. 



About 10 species, natives of North America and Europe. Type species: Synthyris reni- 

 f or mis Benth. 



Corolla present, usually 2-lobed. 

 Corolla none. 



1. S.Bullii. 



2. S. rubra. 



i. Synthyris Bullii (Eaton) Heller. Bull's Synthyris. Fig. 3794. 



Gymnandra Bullii Eaton; Eaton & Wright, 259. 1840. 

 Synthyris Houghtoniana Benth. in DC. Prodr. 10 : 454. 



1846. 



Wulfenia Houghtoniana Greene, Erythea 2: 83. 1894. 

 Gymnandra Bullii Barnhart, Bull. Torr. Club 26 : 378. 1899. 

 Synthyris Bullii Heller, Muhlenbergia i : 4. 1900. 



Pubescent; stem stout, \-2\ high. Basal leaves 

 ovate or orbicular, rounded at the apex, truncate, cor- 

 date or reniform at the base, crenulate all around, 2'-$' 

 long, 5~7-nerved, petioled, the petiole usually shorter 

 than the blade; stem-leaves small, '-i' long, sessile 

 or slightly clasping, crenulate, obtuse, or acute, passing 

 gradually into the bracts of the dense spike ; flowers 

 greenish yellow, 2"-3" long ; corolla present, variously 

 2-4-lobed (commonly 2-lobed), little, if any, longer than 

 the calyx, its lobes obtuse, the stamens inserted on its 

 base; spike much elongated in fruit; capsule emargi- 

 nate, slightly exceeding the calyx. 



On dry prairies, Ohio to Minnesota, Michigan and Iowa. 

 May-July. 



