LEGUMINOS^E. XCIX. PETALOSTEMUM. C. DALEA. 



223 



7 P. CORYMBOSUM (Michx. ex Poir. in herb. Juss. D. C. 

 prod. 2. p. 244.) flowers disposed in panicled corymbs ; leaves 

 having 2-3 pairs of linear, awnless, glabrous leaflets ; segments 

 of the calyx very villous. If. . F. Native of Carolina and 

 Georgia, in pine barrens. Kuhnia afiTnis, Walt. car. 103. Kuh- 

 nistera Carolinensis, Lam. diet. 1. c. Dalea Kuhnistera, Willd. 

 spec. 3. p. 1337. Cylipogon virgatum, Rafin. 1. c. Petals 

 white. 



Corymbose-flowered Petalostemum. Fl. July, Sept. Clt. 1811. 

 PI. li foot. 



S P. ? CAPITA'TUM (D. C. prod. 2. p. 244.) stem striated, 

 silky ; leaflets 5, oblong-cuneiform, obtuse, entire, silky ; spike 

 oblong, capitate, clothed with rufous villi ; bracteas imbricated ; 

 stamens inclosed. 11 . V. Native of the plains of Missouri. 

 Cylipogon capitatum, Rafin. 1. c. Flowers yellow. Stamens 8, 

 connected together at the base in this, as well as the following 

 species, according to Rafin. 1. c. 



Capitate-fiowered Petalostemum. PI. 1 foot. 



Cult. The species of this genus are very difficult to pre- 

 serve in gardens. They should be grown in pots in a mixture 

 of loam, leaf mould, and sand ; and they are increased by seeds, 

 or by dividing the plants at the roots. 



C. DA'LEA (in honour of Thomas Dale, an English botanist 

 of the last century). Lin. hort. cliff. 3G3. Michx. fl. bor. amer. 

 2. p. 56. D. C. prod. 244. Parosella, Cav. elench. hort. madr. 

 Dalea, with decandrous flowers, Vent. Willd. 



LIN. SYST. Alonadelpliia, Dccimdria. Calyx 5-cleft (f. 36. a.) 

 or 5-toothed, sometimes beset with glands. Wings and carina 

 adhering to the tube of the stamens. Vexillum short, free (f. 36. 

 b, '). Stamens 10, monadelphous. Legume ovate, 1-seeded (f. 

 ;J6. c.), shorter than the calyx. American herbs, which are 

 sometimes suflfruticose at the base, beset with glandular dots in 

 every part. Stipulas adhering to the petioles at the base. Leaves 

 impari-pinnate, having the terminal leaflet sessile. Flowers dis- 

 posed in pedunculate spikes, which are opposite the leaves. 



1 D. LAXIFLO'HA (Pursh, fl. sept. amer. 2. p. 741.) plant 

 quite glabrous ; stem tall, branched ; leaves with usually 4 pairs 

 of linear-oblong leaflets ; racemes few-flowered ; flowers dis- 

 tinct, having 9 stamens ; bracteas glabrous, acute ; calycine seg- 

 ments acuminated, silky, and plumose. Tf.. F. Native of Up- 

 per Louisiana, Nutt. gen. amer. 2. p. 101. D. enneandra, Fras. 

 Psoralea laxiflora, Poir. suppl. Flowers white. Leaves small, 

 strong-scented. Calyx almost like that of Petalostemum, Sect, 

 vi. Kuhnislera, Root reddish, and rather fusiform. 



Loose-jlorvered Dalea. Fl. Jul. Aug. Clt. 1811. PL 3 to 4 ft. 



2 D. AU'KEA (Nutt. in Fras. cat. 1813. gen. amer. 2. p. 101.) 

 plant clothed with silky villi ; stem erect ; leaves having 4 pairs 

 of obovate leaflets, which are pilose beneath ; spikes of flowers 

 dense, cylindrical ; bracteas rhomboid-ovate, about equal in 

 length to the calyx ; calyx densely clothed with wool ; the teeth 

 subulate. 7. F. Native of Upper Louisiana, near White- 

 river, on the Missouri. Pursh, fl. sept. amer. 2. p. 741. Psoralea 

 aurea, Poir. suppl. Flowers golden-yellow. 



GW<fcn-flowered Dalea. Fl. July, Aug. Clt. 1811. PI. 2 ft. 



3 D. ALOPECUROI'DES (Nutt. gen. ainer. 2. p. 101.) plant gla- 

 brous and erect ; leaves having 10-15 pairs of linear-elliptic re- 

 tuse leaflets ; spikes of flowers ovate or cylindrical, pedunculate, 

 beset with silky villi ; bracteas length of calyx. Q. H. Native 

 of Georgia, Florida, and Louisiana. Lin. hort. cliff, t. 22. 

 Psoralea Dalea, Lin. D. Linnae'i, Michx. fl. bor. amer. 2. p. 57. 

 t. 38. D. alopecuroldes and D. Cliffbrtiana, Willd. spec. 3. p. 

 13.36. Petalostemum alopecuroideum, Pursh, fl. sept. amer. 2. 

 p. 461. Psoralea alopecuroldes, Poir. Flowers having a white 

 vexillum, and pale-violet wings and keel. 



Fox-tail-like-spikeA Dalea. Fl. Jul. Aug. Clt. 1812. PI. 1 ft. 



4 D. PEDUNCULA'TA (Pursh, fl. sept. amer. 2. p. 474.) plant 

 smoothish ; leaves with usually 6 pairs of linear, acute, mucro- 

 nate leaflets ; spikes of flowers oblong, axillary, rather crowded, 

 and short ; peduncles 3 times shorter than the leaves ; bracteas 

 minute, length of pedicels; teeth of calyx subulate. Q. H. 

 Native on the banks of the river Mississippi. Flowers rose, 

 coloured. Perhaps the same as D. alopecuroldes, ex Nuttall. 



/V'.'/'/;c/n/i.'-spiked Dalea. PI. 1 foot. 



5 D. LAGOPUS (Willd. spec. 3. p. FIG. 36. 

 p. 1340.) plant glabrous, erect; 



leaves with 9-15 pairs of obovate- 

 oblong obtuse leaflets ; spikes of 

 flowers pedunculate, cylindrical, 

 beset with silky villi ; bracteas 

 ovate, acuminated, shorter than the 

 calyx. O' H. Native of Mexico. 

 Psoralea lagopus, Cav. icon. 1. t. 

 86. P. leporina, Ait. hort. kew. 

 ed. 1. vol. 3. p. 81. Spike about 

 an inch long. Flowers violaceous. 

 Hare's-foot Dalea. Fl. Oct. 

 Nov. Clt. 1780. PI. 2 to 4 feet. 



6 D. ANGUSTiroLiA ; plant her- 

 baceous, smooth ; leaflets 3 or 

 5 pairs, linear, pointless, glandu- 

 lar beneath ; spike cylindrical ; 



calyx downy, fulvous with awl-shaped feathery teeth. Q. II. 

 Native of Mexico. Stipels obsolete. Spike of flowers 2 inches 

 long. Bracteas ovate, acuminated, blackish. Flowers small, 

 purple, (v. s. herb. Lamb.) 



Narrorv-leaflelled Dalea. PL 1 foot. 



7 D. ALOPECU'RUS (Sesse and Moc. mss.) plant herbaceous, 

 simple, hairy ; leaves with 5 pairs of lanceolate, acute leaflets : 

 spikes ovate-cylindrical, on long peduncles ; calyx very hairy, 

 with awl-shaped, feathery teeth ; stipulas long and narrow. 

 O- H. Native of Mexico. Flowers large, purple, (v. s. herb. 

 Lamb.) 



Fox-tail- spiked Dalea. PL 1 foot. 



8 D. SERI'CEA (Lag. nov. gen. et spec. p. 23.) plant ascending, 

 clothed with adpressed silky villi ; leaves with 4 or 5 pairs of oval- 

 lanceolate acute leaflets : spikes of flowers ovate, on very long 

 peduncles, silky-villous ; bracteas oblong, acuminated, shorter 

 than the calyx, y.. S. Native of Mexico, near Guanaxuato. 

 D. longipes, Moc. et Sesse, fl. mex. icon. ined. D. gracilis, 

 Kunth, mini. 166. t. 48. H. B. et Kunth, nov. gen. amer. 0. 

 p. 481. Flowers of a dark-violaceous colour. Peduncles 8 or 

 9 inches long. 



Silky Dalea. Fl. July, Aug. Clt. 1824. PL l foot. 



9 D. ACUTIFOLIA (Moc. et Sesse, fl. mex. ined. D. C. prod. 2. 

 p. 245.) plant glabrous, erect ; leaves with 3 or 4 pairs of ob- 

 long-linear acute leaflets, the odd one longest ; spike of flowers 

 oblong, almost terminal, pedunculate ; bracteas longer than the 

 calyx. O- G. Native of Mexico, on the mountains of Chilapan, 

 in humid places. Flowers mixed with white and purple. 



Acute-leaved Dalea. PL 1 foot. 



10 D. HYPOGLOTTI'DEA (D. C. prod. 2. p. 245.) plant spread- 

 ing, smoothish; leaves with 1 1-13 pairs of ovate leaflets ; spikes 

 of flowers ovate, on long peduncles, which are lateral and pubes- 

 cent ; bracteas length of calyx. 1 . S. Native of Mexico. 

 Flowers purple. D. astragalina, Moc. et Sesse, fl. mex. ined. 



Under-tongued Dalea. PL spreading. 



11 D. ASTRAGALI'NA (H. B. et Kunth, nov. gen. amer. 6. p. 

 484.) plant shrubby, much branched; leaves with 8-11 pairs of 

 lanceolate- oblong, mucronate leaflets, which are hardly scabrous 

 above, but pubescent beneath, as well as the branches, and 



