. Carnegie Institution of Washington publication. SPKCIAL PART: THK CHLOROPHYLL APPARATUS. 7 was determined by inspection only, and all chloroplastids that from com- parison were seen to IK- normally colored were classed as beinii' functional and were considered as having adequate amounts of 'ht and of air. The following plants were passed under observation during" the course of this study: Aster spinosus Be. nth.; l>accliaris eiuoryi (iray; Cell is frallida Trr.; C ivvv/.,' i^ an tens Kn.^lm.; (\»ida/ia s fiat hit laca (iray; ( 'oril/cii Iridoitata Vail; /:/>//(•(//'(! antis
. Carnegie Institution of Washington publication. SPKCIAL PART: THK CHLOROPHYLL APPARATUS. 7 was determined by inspection only, and all chloroplastids that from com- parison were seen to IK- normally colored were classed as beinii' functional and were considered as having adequate amounts of 'ht and of air. The following plants were passed under observation during" the course of this study: Aster spinosus Be. nth.; l>accliaris eiuoryi (iray; Cell is frallida Trr.; C ivvv/.,' i^ an tens Kn.^lm.; (\»ida/ia s fiat hit laca (iray; ( 'oril/cii Iridoitata Vail; /:/>//(•(//'(! antisyphilitica C. A. Meyer; Foiu/incria sfilt'tidetis Eni^lm.; Frauscria i/innosci (ira\-; J\'rr/i>ii(i sfiiiiosa Zncc.; Kramcria cauescois (.ira\-; Olncva lesota (iray; Parkinsonia aculcata L.; Parkinsonia microphylla Torr.; /\u lei/i son i a torrcyaua A Vat son; /V/.s- vetutmaWooton] Sa/t'.v tt/^nt Marsh.; Samfriii'its nif \ii~ana F'resl.; Zizypktts parryi Tor?. SPECIAL PART: THE CHLOROPHYLL APPARATUS. ASTER SPINOSUS; BACCHARIS EMORVI. (Fig. i.) These ]ilants inhabit the wash ' the river and the irrigating' and \va\-side ditches, where water is frequently to be found. Aslcr sfiiiiosHS is an annual with perennial root; /lacc/taris c/i/orvi is ]>erennial. Both Aster and Ji(ur//an's are usually devoid of leaves, but the youn.^ portions at least are supplied with rudimentary FIG. i. — Baccharis emoryi: A, segment from transverse section of young stem to show the character of cortical chlorophyll band () ; B, sec- tion of leaf, magnified as in A.* Chlorophyll of the stem is confined to the cortex in both species and in both the chlorenchyma is palisade. The palisade in the stems of each also closely resembles that in the rudimentary leaves of the same species. This similarity in the structure of the chlorophyll band* in the stem and of the *In all figures chlorophyll is indicated by Please note that these images are extracted from scanned page
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1900, bookyear1908
