

BOTANICAL 



'ERBAHl 



^^cV 



yOL. 3 APRIL, 1878. No. 4 



EuoAi.YPTCS gFjObulus. — Having been led to raise the E. glolmlus from seed for 

 experimental purposes, the last summer, the plant atibrded opportunities for some quile 

 interesting observations. Tliis tree is not onh^ remarkaljlc for its rajiid growth w lien 

 young, but e({ually so for some eurious eceentncities of eharacter. To tlio.se familiar 

 with the growing "Blue Gum," probably these observations are not new; hut to the 

 readers generally of the Gazette, they will prove interesting, as they certainly were to 

 the writer. Sown in March, in a flower-pot in the sitting room, the seeds pushed uj) 

 each a pair of bright red cotyledons. The j'oungtree, even when of respectable heighl, 

 say 15 feet, presc^its a crowd of specific ditfereuces, as species in plants are to-dav deter- 

 mined. There would be no difficulty with a young "Blue Gum" on his table, for the 

 teaching ])otani.st. to illustrate a variety of leaf characteristics, considered constant and 

 as specific distinctions in other genera. xVnd when the flowering age comes, the adult 

 tree demurely abandons these earl}' inconstancies. In thrifty growing specimens, the 

 -young E.fjlohulus lias a four-sided stem like the labiates, with sharp thin extensions at 

 the corners. The leaves like those of our own deciduous trees, present the upper side 

 to the sunlight, with one side, as a matter of course in the shade. They are sessile, 

 with the base notched or heart-shaped, and they are opposite, thus theears or lobes of the 

 notch of one leaf lap or lie upon the corresponding parts of its fellow opposite, look- 

 ing at a little distance as if they might be perfoliate, much as appear the upper leaves 

 of the Lomecra or Woodbine. Now in the adult tree the leaves are long !)etiolate, and 

 very long lanceolate. They are also alternate, and to crown the eccentricity of habit, 

 they are arranged edgewi.se to the sun-light; that is, the upper and the under plane of 

 the leaf are equaily expo.sed to the sun. In dried specimens belore me from Santa Bar- 

 bara, Gal., I And that tlie.se great lanceolate leaves are decidedly falcate, and llie (pieer 

 thing is that the concave edges of these scythe-like leaves, are invariablj'set ui)i)erinost. 

 It is observable, too, that while the leaves of the j'oung individuals are glabrous and 

 dark green above, and the undei'sides aie pale, and a little glaucescent, and i\w iind rii) 

 is of course most prominent below, and the resin glands most conspicuous there thcac 

 conditions disappear in the leaves of the older tree. Now the glabrous-greeu has gone 

 and both sides of the leaf are of a wJiitish hue, and the glands are equally di.scenialilc 

 on either side — and strange indeed! the mid-rib and the cardinal veins are nearly 

 equally prominent on either side of the leaf. 



The growth of this Blue°Gum is truly astonishing. In May of thi.- year Dr. K. E. 

 Kunze, of Xew York, set a ])lant two feet high, taken from a conservatory, in his back 

 yard. On the 10th oi October it was about 12 feet high! Allowing the jji-oper time for 

 it to ralh' from the shock of transplanting and change of place, it must have averaged 

 an inch f)f growth per day. — Samuel Lockwood, Freehold, N. J. 



BRYOI.CKiKAL XOTKS. Bv C. F. AUSTIN. — TrICIIOSTOMUM V SlTBDENTiCULATLM, 



a. sp. — Humile, fusco-viride; foliis siccitate involuto-ciisj)atis liuniiditalc patentibus 

 e basi angustata canaliculata caulem ad %-amplectente late elliptico-oblongis noii 

 nullis convoluto-concavis aliis planiusculis, margine nee recurva nee crenulata 

 versus basin late uudulata versus apicem obtuse mucronatem minutissime denticulala, 

 dorso minutissime papillose, costa valida flavescente vel subrufa l;evi percurrente. 



