. Brigham Young University science bulletin. Biology -- Periodicals. BuiLoGiCAL Skbies, \ol. 16, No. 3 TUF. BoHACINACIiAK OF I'XAII 63 the tube, included; filaments short, anthers ob- long, usually with apieulate connectives; style filiform; stignias geminate; ovules 4; nutlets 4 or rarely fewer, erect, ovoid or angular, smooth or verrucose, affixed by a broad horizontal or slightly obli([ue basal areola; gynobase flat or very broadly pyramidal. Type Species: Lithospermum officinale L. 1. Annuah white; nutlets tiibercu- late and dull 1. L. arvcnsc 1. Perennial; flowers greeni
. Brigham Young University science bulletin. Biology -- Periodicals. BuiLoGiCAL Skbies, \ol. 16, No. 3 TUF. BoHACINACIiAK OF I'XAII 63 the tube, included; filaments short, anthers ob- long, usually with apieulate connectives; style filiform; stignias geminate; ovules 4; nutlets 4 or rarely fewer, erect, ovoid or angular, smooth or verrucose, affixed by a broad horizontal or slightly obli([ue basal areola; gynobase flat or very broadly pyramidal. Type Species: Lithospermum officinale L. 1. Annuah white; nutlets tiibercu- late and dull 1. L. arvcnsc 1. Perennial; flowers greenish to yellow, nutlets white, smooth ( 2). 2. Corolla 10 mm long or more, tube definitely ex- ceeding the , green or pale yellow, nutlets 4-6 mm long 4. L. ruderale 2. Corolla 10 mm long or more, tube definitely ex- ceeding the calyx, yellow (3). 3. Styles of all flowers about the same length; stamens all bonie near the top of corolla tube; corolla bright yellow, usually over 20 mm long, its lobes toothed or with a fringe of hairs; later flowers cleistoga- mous, much smaller, in fruit with recurved pedi- cels 2. L. incisum 3. Styles of flowers of 2 lengths (heterostyled); sta- mens borne either about at the middle or near the top of the corolla tube; corolla deep yellow or orange, not over 20 mm long, its lobes entire or nearly so; smaller cleistogamous flowers absent; root thick, containing a purple dye .3. L. mtiltifloriim 1. Lithospermum L. Sp. Pi. 132. 1753. Type: Europe. Annual; stems erect, 2-7 dm tall, one to several siiuple or sparsely branched above, hoary strigose; leaves 2-5 cm long, 2-8 mm broad, closely appressed-hispid, firm, veinless, with prominent midrib, pale beneath, basal leaves rosulate, oblanceolate, or spathulate, those of the stem acute and lanceolate or linear; racemes bracted, becoming loosely flowered; calyx parted into linear-subulate lobes, hispid, mature calyx with the erect or ascending lol>es becoming 8-13 mm long, the very short
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