From the New York Botanical Gardens.

Please raise your hand if you are one of those (like me) who always thought pineapple fruits hung from a plant upside down. For a long time I had this vision of a pineapple tree with many pineapples hanging downwards from branches (like that in an apple tree). The first time I saw a pineapple on the plant many years ago, it was, needless to say, a moment for pause and surprise.
Pineapples belong to the Bromeliad family, and like other bromeliads, are low growing plants with tough waxy leaves. This particular specimen was seen at the New York Botanical Gardens and photographed with an iPhone 4s.
The artichoke (Cynara cardunculus) is a type of thistle whose unopened buds (hearts) are used in Mediterranean cuisine. The photograph below is that of the wild (and therefore inedible variety) artichoke, also known as cardoon. That the artichoke is closely related to the thistle is clear from the purple head of petals that sit on top of the flower.

Photographed at the New York Botanical Gardens on 22nd July, 2013 using an iPhone 4S. Later processed in Adobe Lightroom simulating a single frame HDR.
Related Articles:
http://juridicious.com/2012/08/13/british-wild-flowers-thistles/
I went out with my miniature macro attachment to the iPhone last week and captured photographs of a few wildflowers. Apart from the overall mediocre image quality (thank you Apple!) and extremely shallow depth-of-field, the macro adapter does a reasonably good job.



All photographs from an iPhone 4S with a macro lens attachment. Post-processed in Adobe Lightroom 5.0.
Sainfoins (Onobrychis viciifolia) belong to the pea family (Leguminosae/Fabaceae). My trusted Collins Complete Guide to British Wildflowers tells me that these are generally found in dry, calcareous grasslands, which is exactly where I found these growing!



All pictures with a iPhone 4S, the bottom two with an external macro lens attachment. All pictures corrected for contrast and white balance in Adobe Lightroom 5