PL ex. cor. 23. OROBANCHEiE. 72. Orobanche. 315 



b. Bractea 1 to each flower ; corolla 5-lohed. 



4. Orolanche rubra. Red iroomrape. 

 Stem not branched; corolla tubular; galea cloven; lip 



equally 3-lobed ; filaments fringed at bottom ; style fringed 

 above. 



Orobanche rubra, Eng. Bot. 1786. 



Basalt rocks ; perennial ; August. 



Root creeping ; herb purplish red ; stem a foot high ; spike 

 20-flowered ; flowers glandular, hairy; hractece pointed; 

 lobes of the calyx undivided ; style red, sweet-scented. 



c. Bractecs 3 to each flower ; corolla 5-lobed. Gymnocaulis. 



5. Orolanche ccErulea. Blue Iroomrape. 

 Stem seldom branched; corolla tubular; galea 2-lobed, 



cut; calyx 4-cut, tubular. 



Orobanche flore majore, Ger. em. 1313. 



Nidus avis flore et caule violaceo purpureo colore, Ger. em, 228. 



Orobanche ramosa jS, With, Bot. Arr. 508. 



Orobanche purpurascens, Gmel. Sysf. Nat. 954. 



Orobanche purpurea, Jacq. Austr. 'illQ. 



Orobanche Ifevis, Lamarcke Ft. Fr. 2,327. 



Orobanche caerulea, Villar^sDauffli. 2,406. 



Large-fiowered broumrape. 



Mountainous pastures; perennial; July. 



(SZ/sw straight, bluish ; 5/>i^e few-flowered, loose; powers 

 bluish-violet, palate whit6; stamens bald; style downy; 

 stigma yellowish. 



^. ramosa. Stem branched. 



6. Orobanche ramosa. Branched broomrape. 

 Stem branched; corolla 5-cut, lobes blunt, not in the 



least cut; calyx short, deeply 4-cut. 



Orobanche ramosa, Dillen in Jiaii Syn. 288 *, 3 ; Park. 1363 ; Ger. em. 

 1312; Lin. S. P. 882. 



Hemp-fields ; annual ; August and September. 



Stem 1 foot high ; spike many-flowered, pointed ; flowers 

 purplish-blue, tube yellowish; stamens rather fringed; style 

 rather bald ; stigma white. • 



II. 73. LATHR^A. Linnaeus. Toothwort. 



Calyx bellshape, 4?-cut; corolla tubular, 2-lipped; galea 

 2-cut; lip 3-cut; stamens ^^ didynamous; anthers hirsute; 

 stigma nicked ; seeds globose. — Root scaly ; scales close, 

 imbricated; stem not branched, purplish ; bractea 1 to each 

 flower ; flowers pedicelled. 

 3 



