680 



BORAGINACEAE (BORAGE FAMILY) 



H- 4+ Corolla irregular, limb and throat oblique, and lobes unequal. 



7. Lycopsis. Corolla-tube curved. Stamens included. 



-j- +- Throat of corolla open or merely with folds or crests (not scales). 

 H- Corolla and stamens regular. 



8. MyosotiS. Corolla short salver-form, its lobes rounded, and throat crested. Racemes not 



leafy -bracted (or only exceptionally so at base). 

 Mertensia. Corolla trumpet- or funnel-shaped, with open or crested throat, usually blue. 



Nutlets fleshy or becoming dry, attached just above the base. 

 Lithospermum. Corolla salver-form to funnel-form, its rounded lobes spreading ; the throat 



either naked or with low crests. Eacemes leafy -bracted. 

 Onosmodium. Corolla tubular, unappendaged, its erect lobes acute. Racemes leafy-bracted. 



H- -H- Corolla irregular, limb and throat oblique, and lobes unequal. 

 Bchium. Dilated throat of corolla unappendaged. Stamens unequal, exserted. 



9. 



10. 



11. 



12. 



1. HELIOTR6PIUM [Tourn.] L. TURNSOLE. HELIOTROPE 



849. H. curassavicum. 



Corolla salver-form or funnel-form, unappendaged, more or less plaited in 

 the bud. Anthers nearly sessile. Style short ; stigma conical or capitate. 

 Fruit separating into 2 indurated 2-celled and 2-seeded closed carpels, or more 

 commonly into 4 one-seeded nutlets. Herbs or low shrubby plants ; leaves 

 entire ; fl. in summer. (The ancient name, from rfXtos, the sun, and rpoTrij, a 

 turn, with reference to its flowering at the summer solstice.) 



1. EUHELIOTR6PIUM Griseb. Fruit 4-lobed, separating into four l-celled 

 1-seeded nutlets ; style short. 



* Flowers in bractless one-sided scorpioid spikes. 



1. H. EUROPAEUM L. Erect annual, 1.5-8 dm. high, 

 hoary-pubescent ; leaves oval, long-petioled ; lateral spikes 

 single, the terminal in pairs; calyx spreading in fruit, 

 hairy ; corolla white, rarely 4 mm. broad. Waste and 

 ballast ground, Mass, to D. C. and Fla. (Adv. from Eu. ) 



2. H. curassdvicum L. (SEASIDE H.) Apparently 

 annual, glabrous; stems ascending; leaves lance-linear 

 or spatulate, thickish, pale, almost veinless ; spikes in 

 pairs ; flowers white or bluish. Sandy seashores and salt 



marshes, from Del. southw. ; saline soils, s. 111., southw. 

 and westw. ; ballast and waste places near the coast, 

 locally northw. to Me. FIG. 849. 



* * Inflorescence not at all scorpi- 

 oid ; flowers scattered. 



3. H. tenSllum (Nutt.) Torr. 

 Stem 1. 5-4 dm. high, paniculately 

 branched, slender, strigose-can- 

 escent ; leaves narrowly linear, 

 with re volute margins ; flowers 

 white, often bractless. Open 

 dry ground, Ky. to Kan., and 

 southw. FIG. 850. 850. H. tenellum. 



2. TIARfDIUM (Lehm.) Gray. Fruit 2-lobed, sepa- 

 rating into two 2-celled 2-seeded carpels, with some- 

 times a pair of empty false cells; style very short; 

 851. H. indicum. flowers in bractless scorpioid spikes. 



4. H. INDICUM L. Erect and hairy annual ; leaves petioled, ovate or oval and 

 somewhat heart-shaped ; spikes single ; corolla blue ; fruit 2-cleft, miter-shaped, 

 with an empty false cell before each seed-bearing cell. Waste places, Ky. to Ind., 

 Mo., and southw. ; also on ballast northw. (Adv. from India.) FIG. 861. 



