Onosmodium. BORRAGINACEiE. 205 



L. hirtum, Lehm., 1. c. Hisi>id or liirsute, and at lengtli rougli, a foot or two liigh: 

 leaves lanceolate or the lower linear and tioral ovate-oblong: corolla briglit orange, with 

 ample and rotate deeply 5-clelt limb and prominent crests iu tlie throat ; the ring at 

 base within bearing 10 very hirsute lobes or teeth : flowers mostly pedicelled : calyx-lobes 

 elongated and linear-lanceolate. — BhIscJihi Carol inensia, Gmel. Sysi. i. 315. B. Gmelini, 

 Michx. 1. c. Auchusn hirta, Muhl. Cat. Lithospermum deaunbens, Torr. iu Ann. Lye. N. Y. 

 ii. 225. L. Bcjariense, DC. 1. c. 79. — Pine barrens, &c., Michigan to Minnesota, Virginia, 

 Florida, Texas, and Colorado. — Tube of tlie intense orange corolla 4 or [> lines long, the 

 outspread limb sometimes almost an inch in diameter, but often half smaller. In some 

 specimens, tlie stamens are inserted on the middle of the corolla and the style rises to 

 tlie throat ; in others, the style rises only to the middle and the stamens are in the throat. 



* # * Corolla bright yellow, salvcrforni ; its tube in wull-developed tlowers 2 to 4 times the length 

 of tlie calyx ; the crests in the tliroat conspicuous and arching; the lobes undulate artd more or less 

 erose : later llowcrs cleistogeuoiis. — Ptntalophas, A. DC 



L. angustifolium, Michx. Erect or diffusely branched from the base, a span to a foot 

 or nu^re high, minutely scabrous-strigose and somewhat cinereous: leaves all linear: 

 flowers pedicelled, leafy-bracted, of two sorts ; the earlier and conspicuous kind witli tube 

 of the corolla an inch or less in length and the rounded lobes commonly erenulate-erose ; 

 later ones, and those of more diffusely brandling plants, with inconspicuous or small and 

 pale corolla, without crests in the throat, probably cleistogenous, the style shorter than the 

 nutlets ; in these the pedicels are commonly recurved in fruit : nutlets usually copiously 

 impressed-punctate, conspicuously carinate ventrally. — Michx. Fl. i. 130 (the state with 

 inconspicuous Howers) ; Bebb in Am. Naturalist, vii. 691. L. lineari/blium, Goldie in Edinb. 

 Phil. Jour. 1822, .'119, tlie same state (unless possibly Goldie's plant is L. arcense). L. brevi- 

 Jlorum, Engelni. & Gray, PI. Lindh. i. 44, a similar state. Long-tlowered plant is Batschia 

 longijiora (Pursh, El. i. 102), & B. decuinbens, Nutt. Gen. i. 114. Lilhuspennum lomjljiorum, 

 Spreng. L. incisiim, Lehm. 1. c. ; Hook. El. ii. t. 1(35. L. Mundanense, Spreng. ; Hook. 1. c. 

 t. IGO, a small and smaller-flowered form. Pentalophus lonyijiorus & P. Mandanensis, A. DC. 

 Prodr. X. 87. — Dry and sterile or sandy soil, prairies and banks of streams, Illinois and 

 Wisconsin to Saskatchewan and Dakota, soutli to Texas, and west to Utali and Arizona. 

 Root thick and deep, abounding in violet-colored dye. Glandular ring at base of corolla 

 naked. In tlie state with large and showy flowers, as far as known, the stamens are 

 always borne at the upper part of the tube, and the filiform style is slightly exserted : 

 but perhaps there is some lieterogone-dimorphism. Tliere are seemingly all stages 

 between these conspicuous and the cleistogenous blossoms which are produced through 

 the season. 



18. ONOSMODIUM, Michx. {"Ovoa^iu, and cldog, likeness, from the re- 

 semblance to the Old- World genus Onosma.) — Perennials (of the Atlantic States 

 and Mexico, &c.), rather stout and coarse, roua;h-luspid or hirsute; witli nervosc 

 or costate-veined leaves, and leafy-bracteate flowers crowded in scorpioid spikes 

 or racemes, when fruiting more separated; the bracts resembling the leaves. 

 Fl. spring and summer, strongly proterogynotis, the style early exserted. Corolla 

 greeni.sh-white or yellowish-green: a glandular 10-lobed ring adnate to the base 

 of the tube within. Nutlets as in most Lithosperma. — Michx. Fl. i. 132. 

 Onosmodium and Macromerla in part, Don ; DC. Prodr. x. 68 ; Benth. & Hook. 

 Gen. ii. 859. True Macromeria {exserta) lias versatile anthers on capillary and 

 long exserted filaments. 



§ 1. MACiiOMERiofoES. Corolla 3 or 4 times the length of the calyx, narrow ; 

 the sinuses plane : filaments slender, longer than the linear-oblong obtuse anthers. 

 — MacTomerlu, Don, & DC. partly. (One or two Mexican species have the 

 anthers promptly versatile or transverse; in ours they remain erect.) 



O. Thurberi. Somewhat sparsely strigose-liispid with short bristles (at least on the 

 foliage) and minutely apjiressed-pubescent or when young canesccnt : stem simple, 2 or 3 

 feet high: leaves pinnately 5-7-ribbed ; the cauline oblongdanceolate or oblong (4 or 5 



