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Beauty in a Unique Habitat: The Serpentine Barren
Dr. Tim Block
The John J. Willaman Director of Botany, Morris Arboretum

Called "barren" by early Pennsylvania farmers because they could not support crops, serpentine barrens are actually rich in plant life particularly adapted to this unique terrain characterized by thin soil and bare, light green rock. Join Tim Block on this day-long trip as he explains the significance of the area and points out the rich flora living there. It is easy to see the striking difference between the serpentine communities and the surrounding deciduous forests. Goat Hill Barrens in Chester County, one of the best remaining examples of this unusual habitat, will be one of the stops on this trip. Goat Hill is part of the State-Line Serpentine Barrens, the largest occurrence of serpentine barrens in the eastern United States. The serpentine aster, a tiny plant found only in these barrens, may be in bloom. We will meet at the Arboretum and go by small bus. Park in the meadow next to the entrance Kiosk. Bring your lunch and something to drink. Wear good walking shoes.

Tuesday, September 29, 8:30 a.m.-4:00 p.m.
Single class scheduled on 9/29/2015 at 8:30AM
 
Attendees: 1 $75.00 ea.
Attendees: 1 $80.00 ea.
Attendees: 1 $75.00 ea.

Goldenrods and Asters
Dr. Ann Rhoads
Retired Director of Botany, Morris Arboretum

Goldenrods and asters are the most conspicuous components of the fall wildflower display. We will start by examining the characteristics that define Asteraceae, the family to which both belong. The bulk of our time will be spent using keys to identify species. Part of the course will be spent indoors in order to use dissecting microscopes to become familiar with the fine details of these plants' flowering heads. We will also venture into the meadows at the Arboretum to see some species in situ. Please bring your lunch and something to drink.

Tuesday, October 6, 10 a.m.-2 p.m.
Single class scheduled on 10/6/2015 at 10:00AM
 
Attendees: 1 $54.00 ea.
Attendees: 1 $60.00 ea.
Attendees: 1 $54.00 ea.

Mosses of Fulshaw Craeg Preserve
Keith Bowman
Moss Ecologist

On this trip we will explore the moss community found in the understory of a deciduous forest. We will visit the Natural Lands Trust's Fulshaw Craeg Preserve located near Sumneytown in upper Montgomery County. On our journey we will meet many of the mosses and liverworts that can be found on a moist roadside bank, on boulders, logs, tree bases, and in streamside habitats. We will identify the mosses and liverworts with a focus on their key features, and the relation of those features to the ecology and biology of the mosses and liverworts. The 300-acre preserve is very special because it is perhaps the best remaining example of an intact, relatively undisturbed forest in southeastern Pennsylvania. Park in the meadow to the left of the entrance kiosk. We will travel by small bus. Bring your lunch and something to drink.

Friday, October 16, 9 a.m.-2:30 p.m.
Single class scheduled on 10/16/2015 at 9:00AM
 
Attendees: 1 $65.00 ea.
Attendees: 1 $75.00 ea.
Attendees: 1 $65.00 ea.

Fall Botany at Delhaas Woods
Janet Novak
Past President, Philadelphia Botanical Club

Near the strip malls and auto dealerships of Bristol, PA is a surprising botanical gem: Delhaas Woods. This site is probably Pennsylvania's most intact area of coastal plain, a low-lying region with sandy or gravely, acidic soils. As such, Delhaas Woods is a refuge for numerous plants that are endangered or threatened in the state. We will see a bog and a wet meadow, where, if we are lucky, we will see a gentian in bloom. We will also see a coastal-plain forest with characteristic trees (such as willow oak, sour gum, and sweet gum) and shrubs (such as sweet pepperbush, winterberry, and fetterbush). The trip will involve around two miles of walking on flat ground with good trails. In the wet meadow, you will have the option of staying dry on the trail or walking onto soggy ground to get a closer look at the plants, so choose your footwear accordingly. We will leave from the Arboretum in a small bus. Park in the meadow next to the entrance kiosk. Bring your lunch, and something to drink.

Saturday, October 17, 9 a.m.-2 p.m.
Single class scheduled on 10/17/2015 at 9:00AM
 
Attendees: 1 $65.00 ea.
Attendees: 1 $70.00 ea.
Attendees: 1 $65.00 ea.

Winter Tree Identification
Tim Block
The John J. Willaman Director of Botany, Morris Arboretum

And you thought that all trees look alike in winter! Learn to see both the obvious as well as the more subtle characteristics that make winter identification interesting. The class will begin indoors with a lecture introducing essential identification techniques and a review of important winter characteristics such as bud morphology, habit, leaf and bundle scars, bark, and fruit. The group will then move outside for a stroll through the Arboretum to put your knowledge to work. Dress for the weather.

Tuesday, November 3, 10 a.m.-12 noon
Single class scheduled on 11/3/2015 at 10:00AM
 
Attendees: 1 $25.00 ea.
Attendees: 1 $30.00 ea.
Attendees: 1 $25.00 ea.

KA-POW! Cacao!
Dr. Cindy Skema
Research Botanist, Morris Arboretum

Learn how how one tropical fruit became the irresistible treat that is chocolate. In this lecture we will explore the fascinating history of the cacao plant, from its evolutionary origins through four millennia of
human consumption. We will discuss the botany of the cacao plant, what exactly chocolate is, and then touch on current cultivation, breeding, and pest issues. We will end on a somber note: a contemplation of the possibility of an impending chocolate shortage. This class is not to be missed by amateur botanists, chocolate lovers, tropical plant enthusiasts, and foodies.

Thursday, November 5, 7 - 8:30 p.m.
Single class scheduled on 11/5/2015 at 7:00PM
 
Attendees: 1 $25.00 ea.
Attendees: 1 $30.00 ea.
Attendees: 1 $25.00 ea.

2013 Morris Arboretum · 100 E. Northwestern Avenue, Philadelphia, PA 19118 · 215-247-5777