The Origin and Development of the Foliage Leaves and Stipules of Morus alba

Cross, G. L.

doi:10.2307/2481137

Cited by 26 publications

(12 citation statements)

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“…that there was an intimate connection between This study of Liriodendron revealed no seasonal stipules and nodal anatomy, and resulted in the changes in the configuration of the shoot apex and definition that "stipules are integral portions of hence is not in agreement with the above-mentioned the base of the leaf." Cross (1937) attacked the reports, although all cases are hardly comparable. problem of stipular morphology histogenetically.…”

mentioning

confidence: 84%

Structure and Development of the Vegetative Shoot Tip of Liriodendron Tulipifera L.

Millington

Gunckel

1950

American J of Botany

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confidence: 84%

Structure and Development of the Vegetative Shoot Tip of Liriodendron Tulipifera L.

Millington

Gunckel

1950

American J of Botany

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“…Acropetal initiation of the lamina was observed by Avery (1933) and Cross (1937) and may be a common feature of simple leaf development. The initiation of leaflets in compound leaves and lobes in simple leaves has been observed to occur in both acropetal (Kaplan 1980;Gould et al 1986;Merrill 1979Merrill , 1986Dengler 1984;Stein and Johnson 1990) and basipetal (Troll 1939;Snow and Snow 1941) (Fig.…”

Section: Acropetal Lamina Initiation and Differentiationmentioning

confidence: 84%

“…Leaf shape is also established early in ontogeny in many other species (Cross 1937;Harte and Meinhard 1979;Bruck and Kaplan 1980;Kaplan 1980;Mueller 1982;Gould et al 1986;Merrill 1986;McLellan 1990).…”

Section: Development Of Formmentioning

confidence: 99%

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Comparative leaf development of juvenile and adult Pseudopanax crassifolius

Clearwater¹,

Gould²

1994

Can. J. Bot.

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We describe and compare leaf development in juvenile and adult shoots of Pseudopanax crassifolius, a strongly heteroblastic tree native to New Zealand. The shoot apical meristem is significantly larger in adult plants than in juvenile plants. Leaf primordia of the two forms are morphologically comparable at inception. The allometry of leaf length and width is similar in both forms up to a length of 7 mm. However, a shape index based on the relative position of maximum leaf width indicates that their morphology diverges when leaf primordia are 300 μm long. Laminae are initiated when the leaf primordium is shorter in adult shoots than in juvenile shoots. Maturation processes of the two leaf forms are similar. Cells and tissue types expand and differentiate in an acropetal direction. When leaf length, expressed as a proportion of mature leaf length, is used as a developmental index, the timing of all stages of leaf differentiation is comparable for the two leaf forms. The juvenile form is considered to be derived from the adult form by accelerated growth of the primordial leaf axis. Key words: Pseudopanax crassifolius, heteroblasty, leaf shape, development, allometry, New Zealand.

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“…Recognition of the constricted zone in woody plants is new, although several authors (Cross, 1937;Philipson and Philipson, 1968;Howard, 1974) have observed reduced vascular development near the leaf base. Recognition of the constricted zone in woody plants is new, although several authors (Cross, 1937;Philipson and Philipson, 1968;Howard, 1974) have observed reduced vascular development near the leaf base.…”

Section: Fig 13 Longitudinal Section Of Nodal Region Of Lpi 5 Treatmentioning

confidence: 99%