150 Observations on tJie Itolz, 



A bulbous-rooted plant, with rather small dark blue flowers. It was found 

 by Mr. Tvveedie in stony places, near Rio Grande. " The seedlings grow 

 rapidly, and will probably flower at a year and a half old." The specimen 

 figured flowered in the green-house at Spoffbrth ; but Mr. Herbert thinks the 

 species will prove very nearly hardy, and will retain its leaves, " in part at least, 

 through the winter." Mr. Herbert also mentions five other species of Ge- 

 lasinc, viz. G. purruchucana (two forms), grandiflora, punctata, nuda, and 

 texana ; and three species of Nemostylis Nult., a very nearly allied genus. 

 He then describes three new genera : Alophia, Trifurcia, and Beatonza, the 

 last of which Mr. Herbert has named in honour of our excellent friend, Mr. 

 Beaton ; observing that he saw the species he has described in flower in one 

 of the houses of T. Harris, Esq., under the care of that gentleman's skilful 

 gardener, Mr. D. Beaton (curante hortulano perito D. Beaton). Mr. Herbert 

 also gives the botanical description of a new genus, Hyline, belonging to 

 Amaryllif/«cf«, andof Cyrtanthus Smithi«?22<s, and Habranthus cearensis; and 

 he concludes by remarking that " the attention of collectors should be called 

 to a fine Tigridia-like plant, perhaps a Rigidella, found by Andrieux near the 

 ice-house on the summit of the mountain San Felipe, in Oaxaca." {Bot. 

 Mag., Feb.) 



142. 7'RIS +fragrans Lindl. fragrant ;A, 



A very distinct species, a native of the North of India, where it was found 

 by Professor Royle. The flowers are lilac and white, and they are fragrant. 

 The species is quite hardy, as it stood the winter of 1837-8 without protec- 

 tion, and it requires the same treatment as I. siblrica. (Bot. Beg., Jan.) 

 A77iari/llideiE. 



669. AMARY'LLIS 7989 soUndnEjlnra. 



Synonyme : Hippe&strum solandrz;?6>MOT Herb., Bot. Mag. 3771. 



^rojHe/iaceae. 



955. POURRE"T7^ 29152 c»rvllea. 



Synonyme : Puya cserillea Mol., Bot. Reg. 1840, 11. 



3492. jECHME''A [134. 



suavfeolens Kn. 8; West, sweet-scented ^ CD or 2| f.ap Pk Brazil 838. D l.p.s F). cab. 



By some mistake, the only other species known of this genus, tE. Mertensw, is 

 marked in the Second Additional Supflement to Hort. Brit., p. 607., as belonging 

 to the order OrchidaceEe ; whereas it belongs to 'BromeMdcecs, and was in fact 

 originally called Bromelia Mertens2> by Schultes. The present species has a 

 flower scape about a foot long, covered with pink flowers, which smell like 

 orris-root. It was imported by E, W. Fry, Esq., and there are plants in the 

 Birmingham Botanic Garden. It requires a stove, and it should be grown in 

 a compost of loam, peat, and sand. " When the plants are grown to a suf- 

 ficient size, they can be forced into flower by being kept without water for 

 some weeks, and afterwards having a regular supply, with an increased degree 

 of heat." {Flor. Cab.,Veh.) 



Art. XV. Observations on the Rotz, a Disease in Hyacinth Bulbs. 



(Translated from the " Verhandlungen des Vereins," &c., of Frankfort on the 



Maine, by J. L.) 



The Rotz, or Rot, is a disease which causes a dreadful de- 

 struction among the hyacinths ; and it is much to be lamented 

 that we have not hitherto been able to account for its existence, 

 nor to give a certain remedy for its prevention. A considerable 

 time back the sum of two thousand ducats was offered for a 

 remedy for this disease, which has thrown considerable light on 



