Canadian Science Publishing
cjb-2016-0042f5
Article Title: New fossil Pinaceae from the Early Cretaceous of Mongolia
Author: Fabiany Herrera, Andrew B. Leslie, Gongle Shi, Patrick Knopf, Niiden Ichinnorov, Masamichi Takahashi, Peter R. Crane, Patrick S. Herendeen
Citation: Botany, 2016, 94(9): 885-915, doi.org/10.1139/cjb-2016-0042
Source: dx.doi.org/10.1139/cjb-2016-0042
Caption: Fig. 5. Picea farjonii sp. nov., scanning electron micrographs of the transition between the leafy shoot and seed cone (PP55921). (A) Detail of distal part of the transition region between leafy shoot and cone showing a rudimentary bract (left arrow, see also (B)) and appressed peg-like leaf bases; note the scar left by abscised rudimentary bract (right arrow, also shown in C). (B) Detail of rudimentary bract in (A), arrow indicates the zone of abscission. (C) Detail of rhomboidal bract abscission scar in (A), note central vascular bundle (central arrow) and two lateral probable resin canals (lateral arrows). (D) Detail of the central vascular bundle from (C). (E) Detail of the proximal part of the transition region between leafy shoot and cone showing broken leaf base (upper arrow) and appressed peg-like leaf bases (lower arrow); note abscission zone (middle arrow). (F) Isolated leaf found attached to the shoot in (A) showing linear, flattened, form and smooth margin (squares indicate the areas shown in detail in (G) and (H)). (G) Detail of the leaf apex in (F) showing an acuminate tip and elongated epidermal cells. (H) Detail of the leaf base in (F) (partially bent) showing a more or less elliptical abscission scar and probable resin canal. (I) Isolated leaf found attached to the shoot in (A) showing two bands of stomata on the putative adaxial surface. (J) Detail of stomata (arrows) showing the stomatal aperture flanked by two sunken guard cells with two lateral and two polar subsidiary cells. Scale bars = 2.5 mm (A), 2 mm (F), 500 µm (B, C, E, and I), 100 µm (D, G, and H), 50 µm (J). www.nrcresearchpress.com/journal/cjb
For rights and permission, click he86 re [bit.ly/1pL1c5f]
cjb-2016-0042f5
Article Title: New fossil Pinaceae from the Early Cretaceous of Mongolia
Author: Fabiany Herrera, Andrew B. Leslie, Gongle Shi, Patrick Knopf, Niiden Ichinnorov, Masamichi Takahashi, Peter R. Crane, Patrick S. Herendeen
Citation: Botany, 2016, 94(9): 885-915, doi.org/10.1139/cjb-2016-0042
Source: dx.doi.org/10.1139/cjb-2016-0042
Caption: Fig. 5. Picea farjonii sp. nov., scanning electron micrographs of the transition between the leafy shoot and seed cone (PP55921). (A) Detail of distal part of the transition region between leafy shoot and cone showing a rudimentary bract (left arrow, see also (B)) and appressed peg-like leaf bases; note the scar left by abscised rudimentary bract (right arrow, also shown in C). (B) Detail of rudimentary bract in (A), arrow indicates the zone of abscission. (C) Detail of rhomboidal bract abscission scar in (A), note central vascular bundle (central arrow) and two lateral probable resin canals (lateral arrows). (D) Detail of the central vascular bundle from (C). (E) Detail of the proximal part of the transition region between leafy shoot and cone showing broken leaf base (upper arrow) and appressed peg-like leaf bases (lower arrow); note abscission zone (middle arrow). (F) Isolated leaf found attached to the shoot in (A) showing linear, flattened, form and smooth margin (squares indicate the areas shown in detail in (G) and (H)). (G) Detail of the leaf apex in (F) showing an acuminate tip and elongated epidermal cells. (H) Detail of the leaf base in (F) (partially bent) showing a more or less elliptical abscission scar and probable resin canal. (I) Isolated leaf found attached to the shoot in (A) showing two bands of stomata on the putative adaxial surface. (J) Detail of stomata (arrows) showing the stomatal aperture flanked by two sunken guard cells with two lateral and two polar subsidiary cells. Scale bars = 2.5 mm (A), 2 mm (F), 500 µm (B, C, E, and I), 100 µm (D, G, and H), 50 µm (J). www.nrcresearchpress.com/journal/cjb
For rights and permission, click he86 re [bit.ly/1pL1c5f]