Change of address
3 months ago in Variety of Life
A plant pundit comments on plants, the foibles and fun of academic life, and other things of interest.
 The sweltering heat and humidity of the midwestern summer season are upon us, and many of my exotic babies, natives of milder climates, suffer, while a few plants hailing from more southern climates, rejoice. But the plants that do best, year in and year out, are natives. So this friday's fabulous flower is a native of the tall grass prairie, the yellow coneflower (Ratibida pinnata). Some people confuse the yellow coneflower with the black-eyed susan, which is in another genus altogether. Both are members of the sunflower family, so actually this isn't a fabulous flower, but a fabulous inflorescence composed of brown radially symmetrical disk flowers centrally and yellow bilaterally symmetrical ray flowers appearing like petals (as in "she loves me, she loves me not") around the periphery. The yellow corollas of ray flowers droop downward (as shown), while the corollas of black-eyed susans are held more or less out at right angles (there are other differences too).  The disk flowers in the center (top) of the button haven't opened yet.  Inflorescences like these present the appearance of a single flower because that's the point, to cluster a bunch of small flowers in such a way as to present a bigger display. Pollinators always looking for the biggest reward are attracted to bigger displays, and inflorescences like these are one way plants with small flowers enhance their attractiveness and reproductive success.
The sweltering heat and humidity of the midwestern summer season are upon us, and many of my exotic babies, natives of milder climates, suffer, while a few plants hailing from more southern climates, rejoice. But the plants that do best, year in and year out, are natives. So this friday's fabulous flower is a native of the tall grass prairie, the yellow coneflower (Ratibida pinnata). Some people confuse the yellow coneflower with the black-eyed susan, which is in another genus altogether. Both are members of the sunflower family, so actually this isn't a fabulous flower, but a fabulous inflorescence composed of brown radially symmetrical disk flowers centrally and yellow bilaterally symmetrical ray flowers appearing like petals (as in "she loves me, she loves me not") around the periphery. The yellow corollas of ray flowers droop downward (as shown), while the corollas of black-eyed susans are held more or less out at right angles (there are other differences too).  The disk flowers in the center (top) of the button haven't opened yet.  Inflorescences like these present the appearance of a single flower because that's the point, to cluster a bunch of small flowers in such a way as to present a bigger display. Pollinators always looking for the biggest reward are attracted to bigger displays, and inflorescences like these are one way plants with small flowers enhance their attractiveness and reproductive success.
 Here in the heartland of North America, mangoes remain a little known, novelty item, and truly, like many other exotic things, e.g., seafood, tropical fruits are best when consumed and enjoyed in the shade of the tree from which they were picked. Having traveled around the tropics a great deal, and having a professional interest in economically important plants, the Phactor has tried quite a long life list of tropical fruits. So speaking from considerable experience, the mango is one of the world's best fruits, succulent, juicy, and when just right, with a wonderful sweet-tart rich mango flavor. So naturally my interest was keen when "Ataulfo" mangoes showed up in a local market. It should not surprise you to encounter a variety of mango with which you are unfamiliar because, as the poster shows, there are hunderds of varieties and the only place in North America where you can get more than a handful is Fairchild Tropical Garden. Mangoes shipped to distant regions can be pretty good because they after ripen reasonably well. The flesh should just barely yield under the skin when at their prime,  just like a peach, just slightly under ripe. The Ataulfos were just right, and at $6 a dozen, a bargain to boot. These were quite simply the best mango the Phactor has consumed outside of the tropics. The sweet-tart taste was superb, and this variety has a pleasantly firm, almost fiberless golden flesh, and a small flat pit. Wow! In terms of shape, size, and taste, this variety reminded me of the "Nam Doc Mai" mango of Thailand, and of course mangoes are of SE Asian origin so they have been cultivated there for thousands of years, so New World varieties all will have Asian ancestors. Unfortunately, mangoes go through their prime quickly, and an over ripe mango loses the tartness counterpoint, so 6 of my mangoes were transformed into mango sorbet. A double wow summer treat!
Here in the heartland of North America, mangoes remain a little known, novelty item, and truly, like many other exotic things, e.g., seafood, tropical fruits are best when consumed and enjoyed in the shade of the tree from which they were picked. Having traveled around the tropics a great deal, and having a professional interest in economically important plants, the Phactor has tried quite a long life list of tropical fruits. So speaking from considerable experience, the mango is one of the world's best fruits, succulent, juicy, and when just right, with a wonderful sweet-tart rich mango flavor. So naturally my interest was keen when "Ataulfo" mangoes showed up in a local market. It should not surprise you to encounter a variety of mango with which you are unfamiliar because, as the poster shows, there are hunderds of varieties and the only place in North America where you can get more than a handful is Fairchild Tropical Garden. Mangoes shipped to distant regions can be pretty good because they after ripen reasonably well. The flesh should just barely yield under the skin when at their prime,  just like a peach, just slightly under ripe. The Ataulfos were just right, and at $6 a dozen, a bargain to boot. These were quite simply the best mango the Phactor has consumed outside of the tropics. The sweet-tart taste was superb, and this variety has a pleasantly firm, almost fiberless golden flesh, and a small flat pit. Wow! In terms of shape, size, and taste, this variety reminded me of the "Nam Doc Mai" mango of Thailand, and of course mangoes are of SE Asian origin so they have been cultivated there for thousands of years, so New World varieties all will have Asian ancestors. Unfortunately, mangoes go through their prime quickly, and an over ripe mango loses the tartness counterpoint, so 6 of my mangoes were transformed into mango sorbet. A double wow summer treat!

 It's been awhile since blogging about the tropics. Those of us who study flowers are used to seeing diverse displays to attract pollinators. This is also true for fruit displays attracting seed dispersers. Now of course both of these are floral displays, but at different times in the flower's functional life, and most people just aren't used to thinking of fruits as flowers at the time of seed dispersal.
 It's been awhile since blogging about the tropics. Those of us who study flowers are used to seeing diverse displays to attract pollinators. This is also true for fruit displays attracting seed dispersers. Now of course both of these are floral displays, but at different times in the flower's functional life, and most people just aren't used to thinking of fruits as flowers at the time of seed dispersal. One of my favorite botanists, Charlie Heiser, died last month after a long life (90 yrs) and very productive career. He was a wonderful man, knowledgeable, funny, interested, and interesting. Charlie was tall, imposing at times, so much so he once plucked a high quality Panama hat off my head, found that we had a similar hat size (XL) and strode off with a brisk wave and his new acquired head gear. He never had much natural protection up there and needed the hat more. Charlie was indirectly responsible for generating my interest in the botany of economically important plants because the Phactor was sort of a nephew once removed having had one of Charlie’s students as a mentor. Another quite interesting thing is that Charlie, unlike many scientists, really liked writing about his interests for the general public, and his book Nightshades, the paradoxical plants is a very entertaining read about some fascinating members of this family, including one of his favorites, the chili pepper (thus the picture of chili peppers for sale in southern India - No! That's not Charlie.).  Another of Charlie’s books Seed to Civilization is a good primer on origins of agriculture and crop plants, although the chapter on Seeds, Sex, and Sacrifice caused us to kid him about proposing the dirty old man hypothesis.  Sorry, my copies are not for sale, but used ones can be found.
One of my favorite botanists, Charlie Heiser, died last month after a long life (90 yrs) and very productive career. He was a wonderful man, knowledgeable, funny, interested, and interesting. Charlie was tall, imposing at times, so much so he once plucked a high quality Panama hat off my head, found that we had a similar hat size (XL) and strode off with a brisk wave and his new acquired head gear. He never had much natural protection up there and needed the hat more. Charlie was indirectly responsible for generating my interest in the botany of economically important plants because the Phactor was sort of a nephew once removed having had one of Charlie’s students as a mentor. Another quite interesting thing is that Charlie, unlike many scientists, really liked writing about his interests for the general public, and his book Nightshades, the paradoxical plants is a very entertaining read about some fascinating members of this family, including one of his favorites, the chili pepper (thus the picture of chili peppers for sale in southern India - No! That's not Charlie.).  Another of Charlie’s books Seed to Civilization is a good primer on origins of agriculture and crop plants, although the chapter on Seeds, Sex, and Sacrifice caused us to kid him about proposing the dirty old man hypothesis.  Sorry, my copies are not for sale, but used ones can be found.