164 PROCEEDINGS OF THE AMERICAN ACADEMY 



are unknown ; • but the plant must be a Macreightia, and the most north- 

 ern species of the genus. 



69. DiCLiPTERA KESUPiNATA, Juss. ; Nees. in DC. Prodr. 11, p. 

 474; Torr. Bot. Mex. Bound, p. 125. 



70. Sericographis Californica, Gray in Torr. Bot. Mex. Bound. 

 Surv. p. 125. Beloperone Californica, Benth. Bot. Voy. Sulph. p. 38. 

 This is very variable in the foliage and pubescence ; the leaves on 

 some specimens less than an inch, on others over two inches long ; the 

 inflorescence, calyx, &c. sometimes cinereous-puberulent, sometimes 

 conspicuously glandular-pubescent. The corolla is minutely puberulent 

 or glandular. The pedicels vary from one to three lines in length. 

 Sterile base of the capsule twice the length of the seed-bearing poi'tion. 

 Seeds turgid-lenticular, with a very smooth testa. 



71. Hyptis laniflora, Benth. Bot. Sulph. p. 42, t. 20. The figure 

 does not represent the wool of the calyxes and pedicels half dense 

 enough : it forms a wide white nimbus, more than thrice the breadth of 

 the enclosed flower, the hairs of which, moreover, are beautifully and 

 dendritically branched. — Hyptis Emoryi, Torr., from the interior Cali- 

 fornian desert, on the upper Colorado, is an allied species, but with fur- 

 furaceous-canescent and barely serrulate leaves, and the branched wool 

 of the calyxes also short and furfui'aceous. 



72. Hyptis tephrodes (sp. nov.) : herbacea ? erecta, pube brevis- 

 sima raolli undique canescens ; foliis lanceolatis acutis obtuse serrulatis 

 in petiolum brevem attenuatis, floralibus subulatis parvis ; verticillastris 

 plurifloris laxis approximatis in racemes vel spicas crebriores panicula- 

 tas confluentibus ; bracteis minutis setaceis ; calycibus cum pedicello 

 subfequilongo lana brevi nivea dense vestitis, tubo a^quali oblongo-cam- 

 panulato dentibus setaceis aequalibus ; corolla vix calyce longiore. — 

 Folia utrinque tomento appressisimo albido molha, obsolete venosa, cau- 

 lina 2-pollicaria, 4- 6 lin. lata ; ramealia decrescentia linearia. Pani- 

 culiB floribundce, aphyllaj. Calycis fructiferi tubo vix sesquilineam 

 longo. — A well-marked species of this great genus, of the same section 

 with H. albida, to which it is considerably related. In both the pubes- 

 cence of the calyx is dendritic. 



73. TouRNEFORTiA VELUTINA, H, B. K. Nov. Gen. & Sp. 3, p. 79, 

 t. 201. 



74. Heliotropium Curassavicum, Linn. 



75. Eritrichium (Rutidocaryum) heuotropioides, Torr. Bot. 

 Mex. Bound. Surv. p. 1 40. Antiphytum helitropioides, A. DC. Prodr. 

 10, p. 122. 



