800 LABIATAE. melittis. 



bifido, sed nec in species nec in varietates distinctas dividenda videtur. — lU. 

 grandiflora Sm. Fl. Brit. II. 644. — Engl. bot. t. 6-36. — Hook. FI. Lond. II. ic. - 

 Rchb. 1. c. t. 242. — 31. albida Guss. Prodr. fl. Sic. II. 140. — Melissa sylvestris 

 Lam. Fi. Fr. 11.401. — Habital in Europae umbrosis, in Anglia, Gallia, Germania, 

 Lusilania, Hispania, Sicilia, Italia, Graecia. 



t Species e genere excludenda. 

 m. CAROLIINIANA Spr. = MACBRIDEA PULCHELLA. 

 M. JAPOMCA Thunb. = SCROPHULARIiNEA QUAEDAM? 



3641. PHYSOSTEGIA Bth. 



(Bth. Labiat. gencr. et spec. 504. — Meisn. Gener. plant. vascul. I. 286. II. 195.) 



1. PH. VIRGINIANA Bth. 1. c. 504. f el 7-38. — Calycib. acute quinquedentatis. ^. — 

 Herba 2-3-pedalis, saepius omnino glabra, rarius pubescentia tenuissima in parte 

 superiore induta. Caules parum ramosi tetragoni laeves. Folia sessilia, plerum- 

 que lanceolata, interdum oblongo-ovata v. obovata, saepius acuta, irregulariter et 

 acute serrata, basi anguslata, utrinque viridia laevia crassiuscula, nervo medio 

 sublus prominulo, caeterum subavenia, floralia infima subconformia, caetera om- 

 nia bracteaeformia, calycibus breviora ovata lanceolata v. linearia acuta sessilia 

 iniegerrima. Racemus terminalis simplex v. subpaniculato-ramosus '/2-l-pedaIis. 

 Flores oppositi approximati v. distantes subsessiles v. breviler pedicellati, Co- 

 rolla incarnata v. purpurea speciosa, 10-11 lineas longa v. interdum ullra polli- 

 caris. — Physostegia imbricata Hook. Bot. Magaz. l. 3386. — Dracocephalum Vir- 

 ginianum Linn. Spec. pl. 828. — Bot. Mag. t. 467. — Dracocephalum intermedium 

 Nutt. Transact. of the Americ. Philos. Soc. V. 187. — Dracocephalum lancifolium 

 Moench, Meth. plant. 410. — Dracocephalum variegatum Vent. Hort. Cels. t. 44. — 

 Dracocephalum denticulatum Ait. Hort. Kew. II. 317. — Bot. Mag. t. 214. — Dra- 

 cocephalum speciosum Sweet, Brit. flow. gard. I. t. 93. — Dracocephalum obova- 

 tum Elliot, Bot, of S, Carol. and Georg. II. 86. — Prasium purpureum Walt. FI. 

 Carol. 166. — Prasium coccineum Walt. I. c. — Habitat in Americae borealis 

 montosis a Canada, humidisque Virginiae et Carolinae ad Novum Aurelianum et 

 provinciam Texas Mexicanorum et ad fl. Columbiae orae boreali-occidenialis. 



2. PH. TRUNCATA Bth, 1. c, 505. •[ — Calycib. truncatis obscure 3-5-lobis, lobis 

 latissimis denticulalis. ^ — Herba erecta subsimplex l-r/2-pedaIis, caule pu- 

 bescenle. Folia et inflorescentia Ph. Virginianae. Folia floralia basi late ovata, 

 calyces aequanlia- Calyx magniludine Ph. Virginianae, sed late campanulatus, 

 apice venosus membranaceus, margine sublacero-denticulalus, lobis plerumque 5 

 obscuris latissimis mucronulatis. Coroila parum brevior quam in Ph. Virginiano, 

 labio superiore breviter bifido. — Habitat in America boreali, in provincia Te- 

 xas Mexicanorum. 



3642. MACBRIDEA Elliott. 



(Elliott, Bot. of S. Carol. and Georg. II. 86. — Meisn. Gener. plant. vascul. L 286. 

 II. 195. — Bth. Labiat. gener. et spec. 505.) 



1. M. PULCHELLA Elliott 1. c. — Blb. I. c. f — Caulis herbaceus erectus pedalis, 

 obluse letragonus sulcatus glaber. Folia petiolata oblongo-elliptica obtusiuscula, 

 obscure serrata v. sinuata, basi rotundaia v, cuneata tenuia, vix venosa, utrinque 

 glaberrima v. supra pilis raris conspersa, floralia sessilia ovata oblusa integer- 

 rima, calycem vix aequantia. Verlicillastri 1-2 ad apices caulis subsexflori. 

 Bracteae nullae. Calyces semipollicares glabri membranacei virides, lobis oblu- 

 sis. CoroIIa sesquipollicaris glabra, tubo basi anguslato, superne in faucem am- 

 plam dilatato. Filamenta villosa. Anlherarum valvulae margine breviter dentato- 

 ciliatae, intus filamenlis polline commixtis pilosae. — Thymbra Caroliniana Walt. 

 FI. Carol. 162. — Melittis Caroliniana Spr. Syst. vegetab. II. 700. — Prasium in- 

 carnatum Walt. FI. Carol. 165. — Habital in America boreali, in Carolinae me- 

 diae uliginosis, prope Augustam, 



